1977 by the engineering change. 1980 by the sn. Not uncommon for parts to be made long before being made into weapons and shipped.
You will have to cal S&W. Goes beyond published data.
Standard Catalog of Smith and Wesson by Supica and Nahas
Standard Catalog of Smith and Wesson, 3rd ed.
Standard Catalog of Smith and Wesson, 3rd, ed.
They are assembly numbers.
Blue Book of Gun Values or Standard Catalog of SMith and Wesson.
You will need to buy or find a copy of the Standard Catalog of Smith and Wesson.
You buy a book that has the serial numbers in it.
The third engineering change of the 686
101-135465.
You have to look them up in the Standard Catalog of Smith and Wesson by Supica and Nahas or call S&W.
Yes