The trigger guard, trigger, hammer, and the grooved cylinder flutes scream "Taurus" to me. After a second look so do the grips. If I had to make an educated guess I'd say it's a Taurus Model 80 IIRC, that was the Taurus designation for their fixed sight, tapered barrel 38. (A Taurus "Model 10" if you will.)

I've owned several from that time period (late 70's early 80's). Never seen a barrel like that on a Taurus though. Most likely as others have said, a replacement. They also made a Model 65, a fixed sight 357 too, but the ones I've seen were from a later time period and had a different trigger/hammer, but they may have made them earlier than ones I've seen (early 90's).

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John 3:16 .