REMOVE

1. Other
2. Asian; Far East Asian; Japan …
3. Unknown

WHAT

1. Iron with some gold inlay … (1)
2. Iron with traces of gold … (1)
3. Shakudo with gold, silver … (1)
4. Steel, sharkskin over woo … (1)

WHERE

1. Asian; Far East Asian; Ja … (4)

WHO

1. The Detroit Institute of … (4)

WHEN

1. 1615 (3)
2. 1868 (3)
3. Edo Period,1615-1868 (3)
4. 1600 (1)
5. 1699 (1)