S & W Model 28-2 Year of Manufacture?

[philthephlier]

Serial # N503XXX. Thanks in advance

[rintinglen]

1978-1980 Was the date of the N500000 range given in The Standard Catalog Of Smith and Wesson. I would surmise that it would be towards the earlier end of that range, 1978 at a guess, but only a letter would be sure.