LOL while I have round butt 2 1/2 and 3 inch 19s and 66s and square butt 4 inch 19s and 66s......... I've always wanted a round butt 4 inch 66 or 19.... never found a gun with the serial number in the right place.

I do have several round butt 4 inch guns.......... 686 (converted), 586(factory) and 617 (converted)