HOLY ROMAN EMPIRE. Maria Theresia, 1740-1780. Taler (silver, 18.41 g, 38 mm). M THERESIA D G R IMP HU BO REG Diademed and draped bust right. Rev: ARCHID AUST DUX BURG CO TYR Imperial double eagle facing, with crown above and double-crowned coat-of-arms on breast. Leypold Type T4.