Kawari-Koshirae 変わり拵 Wakizashi, Silver and Copper Fittings, with Kozuka

This is an interesting style of Wakizashi.
The handle is Katakitsuka(堅木柄) Style and does not have a Tsukamaki.
It is decorated with silver.
The Tsuba, Kojiri, and Mekugi are made of copper.
The Scabbard has an unusual pattern.
Edo period mumei.

Signature : Mumei (Unsigned)
Nagasa : 443mm (17.44 in.) 
Sori : 13mm (0.51 in.) 
Total length : 630mm (24.80 in.) 
Motohaba : 28.7mm (1.13 in.) 
Sakihaba : 22mm (0.87 in.) 
Motokasane : 6.1mm (0.24 in.) 
Sakikasane : 4.1mm (0.16 in.) 
Blade Weight : 401g
Total Weight : 768g