Here is a Summary of S&W M41 Dates of Manufacture from this Thread:
Serial #___ Date of Mfg.
104XX_______ 1958
149XX_______ 1959
189XX_______ 1959
Since my serial# is 9318, do you think it might be pre-1958? This gun has not been fired in over 15 years. I tried it and it still works great with very good accurracy.