numismatic literature
auction catalogs
Merzbacher Eugen, Münzen und Medaillen aller Länder aus verschiedenem Besitz, 7.01.1914, München
116 strom + 13 plates, 2,378 items, cover and plates glued, hole in front cover, block glued in two parts, plates glued, inside, among others, a four-ducatta of John Krystian and George Rudolf 1610, a portugal of Sigismund III 1612 or a five-ducatta of Ladislaus IV 1647