Early 80's
Without a sn, there is no way to answer.
@1965
the -3 stands for the revision number. the oldest 629s wont have a dash or be called "no dash" models then it goes 629-1, first revision and so on. as for your serial number my smith book says it was made in late December 1993. good luck, I hope this helps.
1970
Never made by S&W
@1974
Your serial number indicates that your Smith and Wesson model 39-2 semi auto pistol was made in the year 1974.
@1951. It should not be marked Model 36.
what is the Ser # on my S&W 4046tew isTDU8732.I can say that the Smith and Wesson model 4046TSW(tactical Smith and Wesson) was reintroduced in the year 2000.These semi-auto pistols were made from 2000-2002.
1980 sales@countrygunsmith.net
Need a detailed description of ALL markings.