Smith & Wesson did not assemble or ship their guns in any kind of serial number order so dating by number is not very accurate. Your pistol is a good example of this problem. In my database, the two closest serial numbers closest to your model 41 are A167554 and A194015. Both of these were shipped in May 1973 so yours most likely was also shipped in 1973.
Since other semiautomatic pistols were also in this serial number range, it’s likely that this jump in numbers was caused by a production run of model 39’s, 52’s, etc.
Only a letter from the Smith & Wesson Historical Association can give you the actual ship date.