Welcome to the Forum. I think James is trying to be kind in his assessment of the finish. I have to say with almost complete certainty that the gun was refinished, plus it was chrome plated. The original finish would have been either nickel plate or blue. The biggest clues to a refinish was as stated by James, plus the surface has dished, wavy, and rounded edges where everything should be perfectly flat with sharp edges. The S&W logo is also blurred from the buffing wheel.

That revolver would have shipped from the factory around 1904-1905.

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Gary
SWCA 2515