1979, Bavaria, Rothenburg ob der Tauber. Silver Mayor Thaler Mint Year: 1979Mint Place: Rothenburg ob der Tauber (Bavaria)Denomination: Mayor Thaler Medal (Heinrich Toppler Thaler) - Struck with a historical 17th century screw-press! Diameter: 35mm Material: SilverWeight: 15gmA screw press is a type of machine press in which the ram is driven up and down by a screw. The screw shaft ca ...