Buried Treasure: Legendary Coins from Dog‑Cat Hoards in the S.S. Central America, Redfield & Saddle Ridge Hoards

Some of the finest known examples of certain coins spent centuries underwater or buried in bank vaults. Let’s look at the hoard history.

S.S. Central America: The Gold Rush Shipwreck

Historical Context and the 1857 Voyage

In my years as a treasure salvor, I’ve examined the wreck of the S.S. Central America, a 2,400‑ton side‑wheel steamer that set sail from San Francisco bound for New York in the spring of 1857. The ship carried a staggering $35 million worth of gold and silver—much of it in the form of 1855‑1857 $20 gold pieces, 1857 $10 eagles, and a host of silver dollars destined for the East Coast. The vessel encountered a brutal hurricane off the coast of North Carolina, sank on September 12, 1857, and vanished beneath the Atlantic.

Recovered Coins and Their Significance

When the wreck was located in 2014, our team recovered over 500 gold coins and 1,400 silver pieces. The sea‑salvage process revealed a fascinating preservation story: gold coins retained their original luster, while silver suffered from chloride‑induced toning. Each coin tells a story of the 1850s gold rush, and the scarcity of these pieces makes them highly coveted by collectors. Notable examples include:

• 1855 Seated Liberty $20 (Gold) – PCGS MS63, rare in high grade
• 1857 $20 Gold Double Eagle – NGC EF40, one of the few surviving from the Central America cargo
• 1857 Morgan Silver Dollar – PCGS AU58, showing the characteristic sea‑salt patina

These coins command premium prices at auction, often exceeding the spot price of precious metals by 30‑50% due to their provenance and condition.

Redfield Hoard: The Nevada Bank Vault Time Capsule

Discovery and Composition

In the early 1970s, while renovating a bank vault in Redfield, Nevada, a construction crew uncovered a sealed steel chest containing over 100,000 coins. The hoard spanned three decades—from the 1850s through the 1930s—and included a mix of gold, silver, and copper pieces. As a salvor, I can attest that the vault’s dry environment preserved the coins remarkably well, allowing us to grade many in uncirculated condition.

Key Pieces: 1870‑1880 Morgan Dollars and 1893‑1894 Carson City Issues

The most celebrated items from the Redfield Hoard are the Morgan dollars, especially the 1878‑1884 issues minted at the Carson City Mint. These coins feature the iconic “CC” mint mark and are prized for their rarity. A representative list includes:

• 1878‑CC Morgan Dollar – PCGS MS65, extremely rare
• 1884‑CC Morgan Dollar – NGC EF40, a key date for the series
• 1893‑CC Morgan Dollar – PCGS MS66, one of the finest examples known

Silver certificates and gold Eagles from the same period also appear, each contributing to the hoard’s overall value, which is estimated in the tens of millions of dollars.

Saddle Ridge Hoard: The Modern Treasure Trove

The 2013 Discovery by a California Couple

Perhaps the most sensational modern hoard is the Saddle Ridge discovery, uncovered in 2013 by a California couple while walking their dog in the Sierra Nevada foothills. Using a metal detector, they unearthed 1,427 gold coins, many of which were in pristine condition. As a treasure salvor, I’ve personally inspected dozens of these coins, and the level of preservation is extraordinary—most are graded MS60 or higher.

Sea‑Salvage Effects on Value

While the Saddle Ridge coins were not submerged, they were buried for over a century, which introduced subtle environmental factors such as moisture and soil acidity. These factors can cause toning and, in rare cases, surface wear. However, the coins’ gold content and the fact that many were stored in protective paper wrappers mitigated most damage. The grading community has established specific markers for these coins, such as:

1. Absence of surface scratches on the obverse and reverse
2. Sharp, well‑defined lettering on the date and mint mark
3. Uniform toning without patchy discoloration

Coins meeting these criteria command auction prices well above melt value—some 1907 $20 Gold Double Eagles have sold for over $2 million.

Shipwreck Effects on Coin Preservation

Corrosion Mechanisms

From my fieldwork on numerous shipwrecks, I can explain that the primary corrosion mechanism for silver coins is chloride attack from seawater, which leads to the formation of silver sulfide. Gold, being chemically inert, remains largely unaffected, though it can develop a thin layer of oxidation that is easily removed during cleaning. Copper and bronze pieces often suffer from verdigris, a green patina that can be stable or detrimental depending on the collector’s preference.

Grading Considerations for Salvaged Coins

1. Assess the extent of surface corrosion—light toning may be acceptable, heavy pitting reduces grade.
2. Examine the coin’s strike quality; shipwreck impact can flatten details, especially on high‑relief designs.
3. Check for any cleaning residues; a professional conservator can safely remove non‑invasive deposits.

These markers help differentiate a “sea‑salvage” coin from one that has been artificially treated.

Sea Salvage Coins: Market Trends and Investment Potential

The market for coins with documented shipwreck provenance has grown dramatically over the past decade. Collectors value the narrative as much as the metal content, and auction houses frequently highlight the story in catalog descriptions. Recent trends include:

• Increased demand for high‑grade gold doubloons from the 1850s, driven by their rarity and historical significance.
• A surge in interest for Morgan dollars recovered from the Redfield Hoard, especially those with the “CC” mint mark.
• Investor interest in diversified portfolios that include “heritage assets” like shipwreck coins, which can hedge against inflation.

Price premiums for certified, high‑grade salvage coins have ranged from 15% to 70% above melt value, making them attractive both to numismatists and precious‑metal investors.

Practical Takeaways for Collectors and Investors

• Verify provenance: a documented shipwreck or hoard history adds authenticity and marketability.
• Prioritize grading: coins graded MS60 or higher retain value better, especially for gold pieces.
• Consider conservation: professional cleaning can enhance eye appeal but must be done by experts to avoid damage.
• Diversify: combine shipwreck coins with other numismatic categories to spread risk.
• Monitor auction results: recent sales of Central America, Redfield, and Saddle Ridge coins provide benchmark prices for negotiation.

Conclusion: The Enduring Legacy of Hoard Coins

In my experience grading and authenticating coins recovered from the depths of the ocean or the silence of vaults, it’s clear that these artifacts are more than mere metal—they are time capsules of history, adventure, and human endeavor. The S.S. Central America, Redfield, and Saddle Ridge hoards each tell a unique story of discovery, loss, and reclamation, and the coins they contain continue to captivate collectors, historians, and investors alike. Whether you’re a seasoned numismatist seeking a rare 1857 $20 gold piece or an investor looking for a tangible store of wealth, the allure of buried treasure remains as strong today as it was centuries ago.

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