I recently bought this Smith and Wesson Model 41 .22 LR from a LGS. The gun turned out to be a surprising find. It was just tagged as a Model 41 and being a consignment gun from an estate, the LGS knew little about it. The price was right, it has a great muzzle compensator and, of course, what‘s not to like about a .22. After buying it, I discovered it was made in 1957, the first year. First production run serial numbers began at 3001 and ended at 4999, this gun being 3369. In the first year, by December 1957 they reached numbers in the 3900 serial range. Of note, it took a bit of research to ferret out this information. One thing to keep in mind, Smith and Wesson automatics used the same serial numbers no matter what the model of automatic pistol it was and did not use a specific block of numbers. Jinks says only 679 guns were produced in 1957. That would mean (follow me here) that the serial number may not reflect the production number and though this gun would be number 369 for the year, it is likely production wise, not the 369th Model 41. While it cannot be higher in the production order, if serial numbers were used leading up to serial 369 for other models, it could be closer to the first production Model 41.