What is the date made for lemon squeezer 38 cal. smith and Wesson serial no.49531?

Step 1- be sure that the maker of our revolver WAS Smith & Wesson. If the only marking is "38 S&W", that is not the maker, but the caliber. Second, if the gun IS marked Smith & Wesson, contact S&W customer service. S&W does not share data on dates of manufacture as other makers do.