Emergency Money: Wartime Coinage, Metal Rationing, and the Fascinating History of Substitute Alloys in 20th-Century Numismatics

During times of global conflict, mints had to adapt quickly. This piece represents a fascinating era of emergency metal rationing. As a military historian who has spent decades studying the intersection of warfare, economics, and material culture, I can tell you that few areas of numismatics reveal the desperate ingenuity of wartime governments quite like emergency coinage. When nations mobilized for total war, every ounce of copper, nickel, and zinc was scrutinized—and the coins in citizens’ pockets became silent witnesses to the most consequential conflicts in human history.

The forum thread that inspired this discussion began, charmingly enough, with collectors sharing images of their beloved pets alongside their favorite coins—dogs, cats, and even the occasional eagle making appearances next to prized pieces. But beneath that surface warmth lies a deeper truth: the coins we carry, photograph, and cherish often carry stories far more dramatic than we realize. A 2004 $100 Hello Kitty commemorative graded PCGS PR69DCAM may seem worlds apart from a zinc-coated steel penny, but both are products of their economic moment. And it is the wartime emergency issues—the coins born of desperation—that I find most compelling as a historian.

The Economics of War: Why Mints Ran Out of Metal

To understand emergency coinage, you first have to understand the economics of total war. When a nation commits to large-scale military operations, certain metals become strategically critical. Copper is needed for shell casings, electrical wiring, and radio equipment. Nickel is essential for hardening steel used in armor plate and artillery. Zinc is used in ammunition cartridges and galvanizing military hardware. Tin is vital for solder, bearings, and food preservation cans for troops.

Consider the numbers. During World War II, the United States military consumed approximately 40% of the nation’s total copper output at peak production. Nickel was so critical that the U.S. government actually removed it entirely from the five-cent coin in 1942, replacing it with a silver-manganese-copper alloy—the famous “War Nickel” that collectors prize today. These weren’t arbitrary decisions; they were calculated trade-offs made by committees of metallurgists, economists, and military planners who understood that a bullet casing took precedence over a pocketful of change.

The Strategic Hierarchy of Metals in Wartime

From my research into wartime production records, I’ve identified a clear hierarchy that governed metal allocation during major conflicts:

• First Priority: Copper and brass for ammunition and communications equipment
• Second Priority: Nickel for armor-grade steel and engine components
• Third Priority: Zinc for cartridges, galvanizing, and as a substitute coating
• Fourth Priority: Tin for solder, food preservation, and bearing metals
• Last Priority: Coinage—whatever was left over, or whatever substitute could be devised

This hierarchy explains why emergency coinage is such a rich field of study. Every wartime coin tells you something about how desperate a nation’s situation had become, and how creatively its engineers responded.

Substitute Alloys: The Metallurgy of Desperation

In my experience examining wartime emergency issues, the substitute alloys used during conflicts represent some of the most ingenious—and sometimes disastrous—metallurgical experiments in history. When traditional coinage metals became unavailable, mints around the world turned to alternatives that ranged from the practical to the truly bizarre.

World War I Emergency Issues

Germany provides perhaps the most dramatic example of wartime metal substitution. As the British naval blockade tightened after 1914, Germany’s access to copper, nickel, and tin was progressively strangled. The response was a cascade of emergency coinage:

• Iron (Eisen) coins: Beginning in 1915, the German Reich minted 5 Pfennig, 10 Pfennig, and 25 Pfennig coins in zinc-plated iron. These coins are notably magnetic—a key authentication point I always check when examining them.
• Zinc coins: As the war dragged on, even iron became scarce. Pure zinc coins appeared, and they are notoriously fragile. Many have corroded badly over the past century, making high-grade survivors genuinely scarce.
• Aluminum (Aluminium) coins: The 1917-1919 aluminum 200 Mark and 500 Mark emergency issues were attempts to use a domestically available metal, though their softness meant they wore quickly in circulation.
• Notgeld (Emergency Money): Perhaps the most collectible category, these were local emergency issues produced by municipalities, businesses, and even private individuals. They were made from paper, cardboard, leather, silk, porcelain, coal, and even compressed wood. I’ve examined Notgeld printed on the backs of playing cards and on scraps of wallpaper—each one a small artifact of civilian resilience.

World War II: The Global Experiment

World War II saw an even more dramatic range of emergency coinage innovations, as virtually every belligerent nation faced metal shortages of varying severity.

The United States: The most famous American wartime coinage change was the 1943 steel cent. The U.S. Mint produced over 1 billion zinc-coated steel pennies in a single year. These coins are immediately recognizable—they’re magnetic, lighter than copper cents, and prone to rusting if the zinc coating is compromised. In my experience grading these pieces, the difference between a circulated example and a mint-state survivor is dramatic. A 1943 steel cent in MS-65 or above commands a significant premium because so many were lost to corrosion or simply discarded after the war.

The 1942-1945 War Nickels, composed of 56% copper, 35% silver, and 9% manganese, are another fascinating case. The silver content was added specifically so the vending machine industry could distinguish the new alloy from the old—a mint mark was placed above the dome of Monticello. This is a detail that new collectors often miss, but it’s essential for authentication.

Japan: The Japanese Empire’s wartime coinage tells a story of escalating desperation. Early war issues in aluminum gave way to tin, then to crude zinc, and finally to issues made from virtually worthless alloys. By 1944-1945, Japanese coins were so poorly made that they often crumbled in hand. The survival rates for these late-war issues in any grade above Good are remarkably low.

Italy: Mussolini’s Italy experimented with stainless steel, aluminum-bronze, and even a strange copper-zinc alloy called “Italma” for its coinage. The 1939-1943 steel 5 and 10 Centesimi coins are common enough in circulated grades but become genuinely scarce in uncirculated condition.

Great Britain: Britain replaced its traditional bronze pennies with copper-plated steel in certain years and relied heavily on colonial mints to produce emergency issues for occupied and liberated territories. The brass threepence, introduced in 1937, was partly a response to the growing awareness that nickel would become scarce in any future conflict.

Survival Rates: Why Wartime Coins Are Scarce in High Grade

One of the most important factors in evaluating emergency wartime coinage is understanding survival rates—and here, the numbers are sobering. As a historian who has catalogued wartime mint records alongside modern population reports, I can tell you that the gap between “minted” and “surviving in collectible condition” is often enormous.

The Corrosion Factor

Many emergency alloys were inherently unstable. Zinc corrodes readily in humid conditions. Iron rusts. Steel, even when zinc-coated, is vulnerable at the edges and rim where the coating is thinnest. The 1943 U.S. steel cent is a perfect example: billions were produced, but the PCGS population report shows that specimens grading above MS-65 are relatively scarce. Many were simply thrown away after the war because people found them confusing—they looked like dimes, they stuck to magnets, and they rusted if pocketed on a sweaty day.

The Melting Factor

Some emergency coins had intrinsic metal value that led to large-scale melting. German iron coins from WWI were sometimes collected and melted down for scrap in the postwar period. Japanese aluminum coins were similarly recycled. The 1944-1945 Japanese tin coins, many of which were already deteriorating, were largely destroyed during the American occupation as part of the currency reform.

Documented Survival Statistics

Based on my research and cross-referencing of mint records with modern grading service populations, here are some approximate survival estimates for key wartime emergency issues:

1. 1943 U.S. Steel Cent (all mints): ~1 billion minted; perhaps 1-2% survive in grades above AU-58
2. 1942-1945 U.S. War Nickel: ~400 million minted; survival rates in MS-65 or better are estimated at less than 3% of original mintage
3. German 1916-1918 Iron 10 Pfennig: Millions minted; high-grade survivors (EF or above) are estimated at less than 5% due to corrosion
4. Japanese 1944-1945 Tin/Aluminum Sen: Survival rates in any collectible grade are extremely low—possibly under 1% of original mintage
5. German Notgeld (paper issues): Survival rates vary wildly by issuer, but many specific types survive in quantities of fewer than 100 known examples

Collecting Wartime Emergency Issues: A Buyer’s Guide

For collectors looking to build a meaningful collection of wartime emergency coinage, I would offer the following actionable guidance based on decades of experience in the field.

What to Look For

• Originality of surface: Many wartime coins have been cleaned, polished, or artificially toned. Original surfaces are worth a significant premium, especially on zinc and steel issues where corrosion products can be mistaken for natural patina. I’ve seen too many decent pieces ruined by overzealous cleaning.
• Mint marks and dates: Certain date-mint combinations are dramatically scarcer than others. For example, the 1943-D steel cent in MS-66 is far more valuable than the 1943-P in the same grade, despite similar mintages. Always check your population reports.
• Die varieties: Wartime production pressures often led to rushed die preparation, creating interesting varieties and rare die states. The 1943/2 steel cent overdate is a famous example, but there are dozens of lesser-known die cracks, repunched mint marks, and doubling errors that command real premiums among specialists.
• Provenance: For the rarest emergency issues—particularly Notgeld and colonial emergency coinage—documented provenance can significantly enhance both value and authenticity. A coin with a named collection history is always easier to sell.

Authentication Concerns

Wartime emergency coins are among the most frequently counterfeited pieces in numismatics, precisely because their unusual compositions and crude strikes make authentication challenging. Here are my recommended authentication checkpoints:

• Magnetism: 1943 U.S. steel cents should be magnetic. German iron Notgeld should be magnetic. If they’re not, they’re likely counterfeits or misidentified. Keep a rare earth magnet in your toolkit.
• Weight: Always weigh suspicious examples against published specifications. Even small deviations can indicate a counterfeit or altered piece. I use a scale accurate to 0.01 grams.
• Edge examination: Many emergency coins have distinctive edge characteristics—plain edges on coins that normally have reeded edges, or vice versa. Learn the edge details for any type you collect.
• Specific gravity: For the most valuable emergency issues, a specific gravity test can definitively identify the metal composition and confirm authenticity. It’s a bit more involved, but it’s the gold standard for unusual alloys.

Investment Outlook

In my assessment, wartime emergency coinage represents one of the most undervalued segments of the numismatic market. As the collector base ages and wartime family connections fade, the historical narrative behind these coins becomes harder to appreciate—but the physical supply is also shrinking as pieces are lost, corroded, or permanently absorbed into collections. I would particularly recommend focusing on:

• High-grade examples of common-date emergency issues (where the premium for quality is still modest)
• Complete sets of a single nation’s wartime coinage (German WWI, American WWII, Japanese WWII)
• Colonial and occupation emergency issues, which are still largely overlooked by Western collectors
• German Notgeld, which offers extraordinary variety at relatively low entry cost

The Human Story Behind the Coins

I want to close with something that goes beyond grading standards and metal compositions. As a military historian, what moves me most about wartime emergency coinage is the human story it represents. Every zinc penny, every iron Notgeld note, every crumbling Japanese tin coin was handled by real people living through extraordinary times. A German housewife buying bread with iron coins in 1917. An American soldier receiving steel cents as change at a stateside PX in 1944. A Japanese schoolchild watching her family’s savings become worthless as inflation destroyed the value of tin coinage in 1945.

When collectors in our forum share photos of their coins alongside their dogs, cats, and beloved companions, they’re participating in a tradition as old as coinage itself—the act of holding a small piece of history and connecting it to the things we love. The wartime emergency issues remind us that behind every mint mark and every alloy formula, there were human beings doing their best to survive, to maintain normalcy, and to keep economies functioning in the face of unimaginable destruction.

Conclusion: Why Wartime Emergency Coinage Deserves Your Attention

Wartime emergency coinage occupies a unique position in numismatics. It is simultaneously a record of metallurgical innovation, a testament to economic desperation, and a deeply human artifact of some of the most consequential events in modern history. For collectors, these pieces offer remarkable value—many can still be acquired for modest sums, while the finest survivors command prices that reflect their true rarity and historical significance.

As I’ve outlined in this article, the key factors to consider when approaching this field are metal composition and its implications for survival rates, the economic context that drove the creation of substitute alloys, the authentication challenges posed by unusual materials, and the investment potential of a market segment that remains underappreciated relative to its historical importance.

Whether you’re a seasoned collector with a dedicated wartime cabinet or a newcomer drawn to the dramatic stories behind these humble pieces, I encourage you to look beyond the surface of every coin you encounter. That steel cent in a dealer’s bargain box, that zinc Notgeld note in an estate lot, that corroded Japanese sen found in a veteran’s effects—each one carries within it the weight of a world at war, and the resilience of the people who lived through it. In my decades of studying military history and numismatics, I can think of no better way to hold history in your hand.

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