One thought that may give a little clue as to its origin would be to remove the locks. Locks are often stamped with the lockmakers name and sometimes a patent #. I removed some recently and was suprised that it was a joint patent between stanton(the lockmaker) and the retailer. This may add a little bit of information for you. It sure looks like a lovely piece, enjoy it.
Steve


Firearms imports, consignments


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