French 20 Francs Bonaparte Premier Consul (An 11/12) Gold Coin
Coin (Numismatic/Bullion) · Yellow Gold (High karat with copper-based stability)
Purity: 21.6K (900/1000 Fineness); 90% pure gold and 10% copper alloy
Type
Coin (Numismatic/Bullion)
Purity
21.6K (900/1000 Fineness); 90% pure gold and 10% copper alloy
Gold Type
Yellow Gold (High karat with copper-based stability)
Weight
6.45 grams (approx. 0.1867 troy oz AGW)
Description
An iconic example of Napoleonic numismatics, this 20 Francs gold piece features the bare-headed portrait of Napoleon Bonaparte as First Consul. The obverse is characterized by Tiolier's neoclassical engraving style, depicting a young Napoleon with a focused gaze and short-cropped hair, framed by bold block lettering. As one of the first 'Napoleon' gold coins, it established the weight and purity standards for the Latin Monetary Union.
Key Features
Tiolier engraver's signature at the base of the bust; 'Premier Consul' title signaling the transition from Republic to Empire; distinct 90% gold color characteristic of early 19th-century French coinage
Color & Finish
Muted satin yellow gold with significant surface circulation wear, micro-fine scratches, and a soft aged patina
Hallmarks & Stamps
Obverse: 'BONAPARTE PREMIER CONSUL' text; 'Tirolier' signature at neck base; the reverse (not visible) would bear year, value, and mint marks (e.g., 'A' for Paris)
Dimensions Estimate
21.0 mm diameter; 1.3 mm thickness
Gemstones & Inlays
None
Clasp & Closure
Reeded (milled) edge for security against shaving
Chain & Links
Not applicable; single struck metal planchet
Craftsmanship Details
Produced using screw-press technology; features deep, robust striking with a reeded edge to prevent precious metal theft by 'clipping'
Authentication Indicators
Sharpness of the 'Tiolier' script signature; consistent letter spacing in the legend; typical metal displacement around the rim; color consistent with 90% gold / 10% copper alloy
Origin & Maker
France; Engraved by Pierre-Joseph Tiolier; likely Paris Mint (Monnaie de Paris)
Era & Period
Napoleonic / Consulate Period (Late French Revolutionary Era, circa 1802-1804)
Age Estimate
Circa 1803-1804 (French Revolutionary Calendar An XI or An XII)
Cultural Significance
Represents the stabilization of French currency after the chaos of the Revolution; serves as a propaganda tool for Napoleon's rise to absolute power
Condition Notes
Very Good (VG) to Fine (F) circulation grade; significant surface contact marks and environmental debris consistent with 200 years of handling
Value Estimate
Valued at current gold melt value (+$450-500) plus a numismatic premium of 10-25% depending on the reverse year/mint mark rarity
Care & Maintenance
Do not clean or polish; store in a PVC-free archival coin flip or capsule to prevent further surface wear and scratches
Similar Items
Louis XVIII 20 Francs (Restoration era), Napoleon III 20 Francs (Laureate head), and the Swiss 20 Francs Vreneli
Interesting Facts
The 'Napoleon' 20 Francs gold coin became so trusted that its weight and purity remained the standard for French gold currency for over 100 years, until 1914