What is the age of a smith and Wesson 38 special serial number J189145?

To determine the age of a Smith & Wesson .38 Special with the serial number J189145, you would typically reference the company's production records. Generally, Smith & Wesson revolvers with serial numbers starting with "J" were produced in the late 1970s to early 1980s. Specifically, this serial number suggests it was likely manufactured around 1978. For precise dating, you may want to consult a detailed Smith & Wesson serial number reference guide or contact the manufacturer directly.