How can you tell if your Gurkha is O-1?

[Nobody]

If you get a kukri from a dealer and you don't have the box, how can you tell if it's the O-1 version? I'd there a unique mark on the blade for O-1 vs SK5?

 

[UCPOPO]

Cold Steel's O1 knives and kukris are clearly marked "O1"

 

[Mike Sastre]

Genuine Cold Steel dealers will have product in the box ... and yes, all the O1's are marked as such on the blade.

 

[Nobody]

Thanks all! You all just confirmed what I thought was the case.