The wear is so even that it looks almost "relic'd" - purposely made to look old. Maybe done to cover or hide some authentic wear. If, as you say, the wear is all cosmetic with little sign of actual shooting, this could be a possibility. We know there are folks around who like the look of aged handguns, calling it the patina of age, and we also know there are factory relic finishes for which you (not me) pay more. Not saying that's the case here but with such even wear over the entire piece it raises the possibility.

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ol' country Jim