1888, Germany (Empire), Frederick III of Prussia. Gold 10 Mark Coin. 3.97gm! He ruled the Kingdom for a short-period 99 days only! Mint Year: 1888 Mint Place: Berlin Denomination: 10 Mark Reference: Jaeger 247, KM-514. Material: Gold (.900) Diameter: 20mm Weight: 3,97gm Obverse: Bearded head of Frederick III as German Emperor and King of Prussia right. Mint letter (A) of Berlin below. ...