Buck 503 with "B" stamped on the bolster?

[mwochna]

Hi,

I bought an old Buck 503 with a "B" stamped on the rear bolster. I'm wondering if that is original or someone's monogram. Have you ever seen one stamped that way?

 

[110 Dave]

imho fwiw , it is some ones monogram

 

[chickentrax]

How about a pic???