I recently bought a stainless Model 65 that's seen lotsa use and has a S/N stamped on the left side just below the cylinder. The S/N starts with TDC, then 5 digits. The original S/N is, of course, on the bottom of the grip frame and is completely different than the one mentioned. Any info would be appreciated. I'm guessing it was an inventory/arsenal number used by an institution of some type.
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