Louis XVIII 40 Francs Gold Coin (Louis XVIII Roi de France)
Coin (Numismatic/Bullion) · Yellow Gold (Classic Historical Alloy)
Purity: 22K (.900 Fine Gold); 90% gold and 10% copper alloy for durability.

Type
Coin (Numismatic/Bullion)
Purity
22K (.900 Fine Gold); 90% gold and 10% copper alloy for durability.
Gold Type
Yellow Gold (Classic Historical Alloy)
Weight
12.90 grams (approx. 0.3734 troy oz of pure gold)
Description
This is a French 40 Francs gold piece, a staple of 19th-century European commerce. The obverse depicts the profile of King Louis XVIII, redesigned after his return to the throne. The design reflects the 'Michaut' style, known for its neoclassical precision and elegant portraiture. While this specific example shows significant surface scratches, it remains a pillar of French numismatic history and a substantial store of high-purity gold.
Key Features
Portrait of Louis XVIII with 'MICHAUT F.' signature below the neck; distinct horse head mint official mark; reeded edge.
Color & Finish
Vivid historical yellow with a dull luster; displaying a significant aged patina and surface scratches (likely from circulation or improper storage).
Hallmarks & Stamps
Obverse: 'LOUIS XVIII ROI DE FRANCE'. Signature: 'MICHAUT F.' (Auguste-François Michaut). Mint mark: Horse head (Paris Mint, specifically for the period 1816-1824).
Dimensions Estimate
26.0 mm diameter; 1.8 mm thickness.
Gemstones & Inlays
None; features a relief bust of Louis XVIII with a tied ribbon (queue) in hair.
Clasp & Closure
Reeded edge (traditionally used to prevent shaving of gold from the coin's perimeter).
Chain & Links
Solid metal planchet; no chain attached.
Craftsmanship Details
Die-struck at the Paris Mint using high-pressure screw presses; features characteristic mid-relief typical of the early 19th-century French minting process.
Authentication Indicators
The color is consistent with 90% French gold alloys. The lettering style matches the Michaut design. However, the slightly dull, silvery-grey sheen in this specific photo suggests potential surface oxidation or lighting issues; professional weighing and XRF testing are recommended to ensure it is not a silver-plated contemporary forgery.
Origin & Maker
Kingdom of France; Mint of Paris (marked by the horse head symbol). Engraved by Michaut.
Era & Period
Bourbon Restoration (1814–1830), specifically the Second Restoration period.
Age Estimate
Circa 1816-1824; dating to the reign of Louis XVIII.
Cultural Significance
Represents the restoration of the monarchy in France following the Napoleonic Wars and the re-establishment of traditional French monetary standards.
Condition Notes
Fair to Good. Note the prominent diagonal scratches across the face of the king and significant edge wear. These detractions likely classify it as 'Cull' or 'Very Good' in numismatic grading due to damage.
Value Estimate
Primary value is in gold content (melt value based on 12.9g at .900 purity), currently approx. $800-$900 USD, though the damage significantly reduces the collector's premium/numismatic value.
Care & Maintenance
Do not clean or polish to preserve remaining numismatic integrity. Store in a PVC-free plastic flip or a coin capsule to prevent further scratching.
Similar Items
Louis XVIII 20 Francs (smaller version), Napoleon I 40 Francs, and the later Napoleon III 50 or 100 Francs coins.
Interesting Facts
Louis XVIII was the brother of the executed Louis XVI. He returned to France twice after Napoleon's exiles, making these coins a symbol of the struggle between Imperial and Royalist France.