1780, Empress Maria Theresa. Silver Thaler Coin Mint Period: 1792-1805 Denomination: Maria Theresa Thaler Reference: Leypold T2, Davenport 1151, Hafner 32a, KM-22 (listed under Austrian States, Burgau). Weight: 27.91gm Diameter: 41mm Material: Silver Obverse: Bust of Maria theresia right, large mint master’s initals initials (S.F.) below. Legend: M . THERESIA . D . G . R . IMP . HU BO . ...