[wcm]

On my Marlin SDG there is a stamp on the barrel on the left side just ahead of the receiver,
the stamp is JM . Can anyone tell me what this means? Could it be an initial?
I have a picture of it but don't know how to attach it to the post.

Thanks

 

[MikeG]

John (?) Marlin. Yep, it's on all of them.....

 

[William Iorg]

Yes, proof mark

 

[wcm]

Thanks guys, I appreciate the info