6. The mandate of Ferdinand I (1503 –1564, King of Bohemia from 1526), issued on 12 April 1551 is kept in the Ferdinandeum of Tyrol Landesmuseum (Inv. no. FB6196). We are grateful to Ekkehard Westermann for helping us trace this information. The region marks in the present collections are generally variants of the marks in this mandate, but later marks, referring to Rudolf II (1552- 1612, King of Bohemia from 1575) also occur HyperlinkMandaat.