DAISHO 大小 with Double Certificate, Koyama Munetsugu signed, Mouse Fittings Koshirae

[Dai]
Signature : Issensai Koyama Munetsugu
Nagasa : 617mm (24.29 in.) 
Sori : 18mm (0.71 in.) 
Total length : 940mm (37.01 in.) 
Motohaba : 24.9mm (0.98 in.) 
Sakihaba : 14.7mm (0.58 in.) 
Motokasane : 5.7mm (0.22 in.) 
Sakikasane : 3.7mm (0.15 in.) 
Blade Weight : 407g
Total Weight : 925g

[Sho]
Signature : Mumei (Takada)
Nagasa : 321mm (12.64 in.) 
Sori : 13mm (0.51 in.) 
Total length : 680mm (26.77 in.) 
Motohaba : 25.3mm (1.0 in.) 
Sakihaba : 18.8mm (0.74 in.) 
Motokasane : 5.9mm (0.23 in.) 
Sakikasane : 4.8mm (0.19 in.) 
Blade Weight : 265g
Total Weight : 667g