Grading Collecting French 20-franc gold coins: The Difference Between $10 and $1,000

Condition is everything. When examining French 20-franc gold coins, the difference between a common bullion piece and a numismatic treasure often comes down to subtle variations in wear patterns, luster, strike quality, and eye appeal. As a professional grader, I look at the high points and fields to determine the true grade of each piece.

Historical Significance

The French 20-franc gold series spans multiple republics and empires, from the First Republic through the Third Republic. Each period produced coins with distinct characteristics that affect their collectibility and value. The series includes:

• First Republic (1793-1804)
• First Empire (Napoleon I, 1804-1814/15)
• First Restoration (1814-1815)
• Hundred Days (1815)
• Second Restoration (1815-1830)
• July Monarchy (1830-1848)
• Second Republic (1848-1852)
• Second Empire (Napoleon III, 1852-1870)
• Third Republic (1871-1898)

The Hundred Days coin is particularly challenging to find, especially in Mint State condition, making it one of the most valuable pieces in the series.

Identifying Key Markers

When grading French 20-franc coins, I examine several critical areas:

Wear Patterns

The high points on these coins include Napoleon’s hair and facial features on imperial issues, and the rooster’s breast and comb on Third Republic pieces. On Louis Philippe coins, the king’s hair and the crown details show wear first. The edge lettering (“DIEU PROTEGE LA FRANCE”) should remain sharp and readable.

Luster

Original mint luster is crucial for higher grades. French gold typically exhibits a satin to semi-brilliant finish. Look for unbroken luster in the fields and on the devices. Any breaks in luster indicate circulation or improper cleaning.

Strike Quality

French mints generally produced well-struck coins, but some periods show variability. The Napoleonic issues from the Lille mint (W-Lille) often display exceptional detail. The rooster design requires careful examination of the feathers and comb definition.

Eye Appeal

Beyond technical grading, eye appeal significantly impacts value. Coins with original surfaces, attractive toning, and strong visual contrast between devices and fields command premiums. Avoid coins with excessive bag marks or distracting toning patterns.

PCGS/NGC Standards

Professional grading standards for French 20-franc coins align with international standards, but certain considerations apply:

• MS-60: No wear, but with noticeable contact marks
• MS-63: Original mint luster, few marks, good eye appeal
• MS-65: Full original luster, minimal marks, exceptional eye appeal
• MS-67: Superb mint state with full original luster and virtually no marks

The population reports from major grading services show that pre-1907 rooster issues are generally not restrikes, while some later dates were produced as restrikes in the 1950s. This distinction is crucial for collectors seeking original strikes.

Value Guide

Values vary significantly based on grade and rarity:

• Common dates in XF-AU: $400-800
• Common dates in BU: $800-1,500
• Scarce dates in XF-AU: $1,000-3,000
• Scarce dates in BU: $3,000-8,000
• Rare dates (including Hundred Days): $5,000-15,000+

The First Republic issues command the highest premiums, with AU examples ranging from $6,000-15,000 depending on the mint mark. These were produced at five different French mints, each with varying survival rates.

Authentication Tips

When examining French 20-franc coins, pay attention to:

• Weight: Should be approximately 6.45 grams for gold issues
• Diameter: 21.0 mm for standard issues
• Edge lettering: Should be complete and properly oriented
• Mint marks: Located near the date on most issues

Restrikes from the 1950s often show different edge characteristics and may have slightly different weights. The rooster design restrikes are particularly common and should be avoided by type collectors seeking original strikes.

Conclusion

Grading French 20-franc gold coins requires attention to detail and knowledge of the series’ historical context. The difference between a $10 bullion piece and a $1,000 numismatic treasure often lies in the preservation of original surfaces, the strength of the strike, and the coin’s historical significance. Whether building a type set or focusing on a specific period, understanding these grading nuances will help collectors make informed decisions and build more valuable collections.

For those building comprehensive sets, be prepared for challenges with certain periods, particularly the Hundred Days and First Republic issues. These rarities require patience and often significant investment, but they represent the pinnacle of French gold coinage and offer both historical and numismatic rewards.

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