Current knowledge
Sotheby's Monaco 5th December 1987, lot. 287
Daniel Fröschl
Rudolf II (1552-1612)
Note that there are 2 works at no 21, taken from different manuscripts
Van der Doort 1639
[Daniel] Fröschl (Emperor Rudolph's limner)
Emperor Rudolph II in profile, bare neck and red scarf old Roman fashion
Sale Inventory c.1649-51
Walpole Society reference (1972):