Reading SCSW 3rd I have the impression that all 21-4's were Thunder Ranch specials with TRS serial prefixes. I have one that is marked as a 21-4 that has no Thunder Ranch markings and the serial prefix is DAU. The label on the box shows it as a product 15096 4" bbl, .44 SPL. Any opinions on how many were made like this? And any opinion on value as new with maybe 50 rds fired?
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