1977
The Smith and Wesson model 10-7 was made in the year 1977.
Smith and Wesson Model No. 2
Your serial number dates your Smith and Wesson model 59 to the years 1977-1978.
1992-1994
1957 to 1999
1957 to present.
77-88
1958-99 or so
82-88
The Model 59 was made from 1971-1982
@1971
The frame size of a Smith and Wesson model 66 is K.