Read forums, need more, on Manchurian....

[No Clue]

[PNSSHOGUN]

Rare early production Koa Isshin Manchurian Railway sword. Swords with this logo appear to have been the very first Koa Isshin Mantetsu swords made. 

[No Clue]

Thank you John ! I was leaning that direction but just know very little, other than what I've read online the last few days.  Are you aware of any other " stamps" on these swords ?

IE: On the edge of the na sago ?

[No Clue]

*na kago

[Kiipu]

There is a rather long thread about Mantetsu swords and it can be found via the link below.  Feel free to post any questions you may have in regards to your Mantetsu sword over there.

Attention Mantetsu Owners: A Survey

[No Clue]

Thank you !