If it is really an I-frame model, it would have to be a five-shot gun in that caliber. Then it sounds like a .38/32 Terrier, which means .38 caliber gun built on the .32 caliber frame. The Terrier is the round butt, short barrel version of the .38 Regulation Police. The serial number makes it postwar production, maybe early '50s.
If this is not a five-shooter, then it's not an I-frame and definitely not a Terrier.
David Wilson
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David Wilson
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