Hi can you tell me when my model 36 was made and what its worth? It reads J472658 on the bottom and has MOD 36 stamped inside the cylinder also a stamp under that reading 98634 and under that D13. Its in great shape just a small wear spot on the cylinder.
J472658 shipped sometime 1976-77. The 98634 and D13 are assembly #s, used internally during the build and have no meaning now. Without pictures to see the actual condition, I'll throw out about $400 +/-, based on your description.
As DAinTX said, the frame was numbered sometime around 76-77. My understanding is that a letter from the company will tell you when it actually shipped out as a finished gun. It costs money to have them do this research, though. Most people would assess your gun as a mid to late 70's model 36 and call it good. Enjoy your S&W.