REMOVE

1. steel, pierced circular hole …

WHAT

1. Armor (1)
2. Arms (1)
3. Decorative Arts and Utili … (1)

WHERE

1. European; Northern Europe … (1)

WHO

1. The Cleveland Museum of A … (1)

WHEN

1. 1466 (1)
2. 1499 (1)
3. late 15th century (1)