Hirasankaku-Yari 平三角槍 in Tanto Koshirae, Sho 正 signed, Edo period

A rare Tanto Koshirae Yari.
It has been polished and is in excellent condition.
It comes with a Shirasaya, perfect for storing the blade. (Only one blade is included.)

Signature : Sho
Nagasa : 150mm (5.91 in.) 
Sori : 0mm (0.0 in.) 
Total length : 250mm (9.84 in.) 
Motohaba : 18.8mm (0.74 in.) 
Sakihaba : 12.8mm (0.50 in.) 
Motokasane : 8.5mm (0.33 in.) 
Sakikasane : 5.7mm (0.22 in.) 
Blade Weight : 91g
Total Weight : 148g