Austrian 4 Ducat Gold Coin (Restrike), Emperor Franz Joseph I
Coin/Bullion · Austrian Mint (Münze Österreich), Vienna. Established in 1194, it is one of the world's oldest and most prestigious mints.
Pattern: Franz Joseph I Ducat series; officially a restrike of the 1915 design.

Type
Coin/Bullion
Maker
Austrian Mint (Münze Österreich), Vienna. Established in 1194, it is one of the world's oldest and most prestigious mints.
Material
98.6% Gold (23.66 carats); known as 'Ducat Gold'. Contains 0.4430 troy ounces (13.77 grams) of pure gold. The remaining 1.4% is copper to provide slight durability.
Dimensions
39.5 mm in diameter, 0.8 mm in thickness. Weight: 13.96 grams total. Notable for being extremely thin and wide for its gold content.
Description
A stunning example of high-purity gold coinage, this Austrian 4 Ducat displays the stately profile of Franz Joseph I. The coin's yellow luster is characteristic of its nearly pure 23.66k gold content. It is celebrated for its large surface area and remarkable thinness, which has made it a favorite for jewelry mountings and investment since the early 20th century.
Key Features
Large 39.5mm diameter; extreme 0.8mm thinness; high 23.66 carat gold purity; 1915 restrike date; Franz Joseph I laureate portrait.
Material & Composition
98.6% Gold (23.66 carats); known as 'Ducat Gold'. Contains 0.4430 troy ounces (13.77 grams) of pure gold. The remaining 1.4% is copper to provide slight durability.
Finish & Decoration
Brilliant-uncirculated (BU) strike. Obverse: Right-facing portrait of Emperor Franz Joseph I in ceremonial uniform with the inscription FRANC IOS I D G AVSTRIAE IMPERATOR. Reverse (not shown): Imperial Double-Headed Eagle of the House of Habsburg-Lorraine.
Hallmarks & Stamps
No silver hallmarks; identified by numismatic inscriptions. The date '1915' (standard on restrikes) appears on the reverse. Legibility of the Latin inscription serves as the primary identifier.
Construction Details
Die-struck at the Austrian Mint. Unlike forged silver, this is high-pressure struck metal on a planchet, resulting in crisp raised relief and a flat, reflective field.
Functional Features
Historical currency, now used as a gold bullion investment vehicle and numismatic collectors' item.
Handle & Grip Details
None; coin rim is milled/reeded or smooth depending on specific series, but typically serrated to prevent shaving of the precious metal.
Craftsmanship Details
Masterful die-engraving showing fine details in the Emperor's hair and medals. The relief is exceptionally sharp, characteristic of the Austrian Mint's high technical standards.
Authentication Indicators
Weight must be exactly 13.963g; diameter exactly 39.5mm. Replicas are often thicker or made of gilded silver/brass. High-purity gold has a distinct 'deep' yellow hue.
Origin & Manufacturing
Vienna, Austria. The Austrian Mint is the sole official producer of these historic restrike gold coins.
Era & Period
The design is Late Victorian/Edwardian style, specifically the Austro-Hungarian Imperial period. Most modern examples are official restrikes produced after 1915.
Age Estimate
Modern restrike (produced between 1920–present, likely mid-to-late 20th century). While dated 1915, they are continuously minted for investors.
Cultural Significance
Represents the height of the Austro-Hungarian Empire. These coins were widely used in international trade across Europe and the Middle East due to their consistently high gold purity.
Condition Notes
Excellent to Brilliant Uncirculated. Minimal visible bag marks; fields appear clear and luster is strong. Because they are so thin, these coins are prone to bending; this example appears perfectly flat.
Value Estimate
$1,040 - $1,150 USD, largely determined by the spot price of gold plus a small 3-5% premium for its numismatic appeal and condition.
Care & Maintenance
Do not polish with silver cream. Store in a PVC-free plastic capsule. Handle only by the edges with cotton gloves to prevent oil from dulling the luster. High-purity gold is very soft and scratches easily.
Similar Pieces
1 Ducat Austrian Gold Coin (smaller version, 3.49g); British Gold Sovereigns (lower purity, 22k); French 20 Francs 'Rooster' (90% gold).
Interesting Facts
The 1915 date is frozen in time; following the death of Franz Joseph I in 1916 and the collapse of the Empire in 1918, the mint continued to use the 1915 dies for all subsequent bullion restrikes.