Thanks everyone for you feedback!!!
1.The mark "choke" that is certainly English.
2.The 12 c inside the Diamond is also an old English stamp - however in the way they are stamped is not typical of what I have typically seen in any English shotguns.
3.The stamp "stil" -repeated four times- certainly means style in German (or is it simply bad spelling - four times -.
4.The stamp "ful" is certainly a mystery...(or is it also bad spelling).
5. The crown over the letters that appear to be T V M - and not necessarily in that order - is a very clear mark and I don't think it is an attempt to copy or imitate anything or any European stamp that I have ever seen - I do believe it is a legitimate stamp...
6. The long "control number" which seems to have been stamped much more recently than the other marks - Japanese origin? Or something else?

Last edited by LuisHunter1; 07/14/13 06:47 PM.