CoinWorldTV 1830, Kingdom of Prussia, Frederick William III. Silver Thaler Coin. Mint year: 1830 Denomination: Thaler Reference: Davenport 763, KM-419. Weight: 22.01gm Diameter: 34mm Material: Silver Obverse: Head of Frederick William III right. Legend: FRIEDR. WILHELM III KOENIG V. PREUSSEN / A Reverse: Crowned multiple arms of Prussia and Brandenburg above wreath. All within cro ...