25cm across / 10 inches.
Quite heavy metal display bowl or Tazza made of copper and brass.

Ferdinand II (1578–1637)
Roman emperor is featured in the middle of the Tazza on a horse. His 11 predecessors surround him:
Mathias I
Rudolph I
Albert I
Frider III
Albert II
Frider IIII
Max MI I
Carol V
Ferdin I
Maxmil II
Rudolph II