Raimey & all
I have seen this 'C' in a circle somewhere before -
just can't remember whether it was here on this forum or even on one of my guns
must take the time and look through my guns and check the barrels

The reason for the exercise - apart from gaining knowledge - is simply to find out whether I got a bargain or not.
I like the gun, so it doesn't really matter - but still nice to know.

Best regards

Gunter
NRA Life 1974