Depends on when it was made.
square
Your Smith and Wesson model 13-1 will have a 3in.Barrel if it is a round butt,or a 4in.Barrel if it is a square Butt model revolver.
Need the serial number.
Sorry, I can not help you with the serial number, but if you tell me the model or if there is no model on it the caliber and barrel length and if the butt is round or square I think I can tell you.
round
If it is a 4" or longer barrel model, most likely it is a square butt (98 or 99% chance). If it is a 3" or 2.5" barrel model, it is almost certainly a round butt model. If you have any doubt, remove the grips and examine the back strap of the grip. If it curves inward at the base, making a smooth outline, it is a round butt. If you have any questions, contact me and I'd be happy to answer. I love this revolver.
If someone has made one.
Many different models have been chambered for this round.
That would have been made in the early 1970's. $250-$350
.25 -2.00 USD a round.
Yes, i own a model 28 chp
Yes, the Smith & Wesson Model 651 in round butt configuration is considered relatively rare. Produced in the early 1980s, this model was part of a limited run, making it less common than other models. Collectors often seek it out, particularly in good condition, due to its unique features and limited availability.