REMOVE

1. Tempered steel
2. mid 19th century
3. 1833
4. 1866

WHAT

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

WHERE

1. Asian; Far East Asian; Ja … (1)

WHO

1. Museum of Fine Arts, Bost … (1)
2. Naganori (1)

WHEN

1. Japanese; Late Kamakura p … (1)
2. mid 19th century (1)