Tsuba
(sword guards) are used to protect
the hand from sliding
onto the blade of a sword. They are art works in their own right and are
widely collected. Tsuba were mostly made by specialized kodogu
and tosogu (sword fittings) artists, although some sword makers
produced tsuba (tosho tsuba) as did armour makers (katchushi
tsuba). In some cases the maker used a forged, folded plate; in other cases a
homogeneous plate was used. Many tsuba are signed by the maker on the
seppa-dai (area around the nakago ana).
Occasionally tsuba will be found with two small holes near the base of
the tsuba. These are udenuki-ana which represent the sun and moon
and were likely used for threading a leather wrist thong to prevent
dropping the sword in battle.
Tsuba are commonly divided
into two types; iron (tetsu)
and soft metal (kinko). The kinko tsuba may be made of a variety
of alloys; most commonly either shaduko (blue-black colored
copper-gold alloy), sentoku (brown colored copper-lead-zinc
alloy), shibuichi (gray colored copper-silver alloy), brass or
copper and both may have may have various carved and/or applied decor
and/or cut-out designs (sukashi).
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