Here's another receiver marking I would like to identify gentlemen. Note messed with serial number. Any ideas ?. Thanks, Mike.

I thought the graffiti marks were done by repairers to identify their work, if that is the case seems logical that the alterations were then war time armourer done.

That could be interesting to prove though

The first step may be to try and make sure the graffiti marks are accurate.

Just my thoughts.