SC0129
"Japanese Imperial Army "kyu gunto."
This is the very early one-hand, sabre-type gunto.  The two-hand "D-guard" type came later.  
This is an exceptionally clean piece, complete with the knot and it once belonged to a high-ranking officer who didn't see the actual battle.  Minor scratches and stains on the saya.    
Refer to Swords of Imperial Japan , 1868 - 1945 by Jim Dawson for the history and specific application.  ( ISBN-13: 978-0971912724 ) 
The blade with bohi is unsigned and in recent polish. 
The saber overall length: 86.0 cm.  Saya: 70.5 cm. Blade Nasasa 64.5 cm.  Sori 0.4 cm.                 
Price : NOT FOR SALE