N Frame 357 (Highway Patrolman) made from 1954-1986. Model number designation started in @ 1957. Your low sn should make it from the 54-57 time frame. You need to call S&W
1974
1982
Mid 80s
1980
50-400 usd
You will have to call S&W with the serial number to find out.
According to Smith and Wesson this gun was made in 1969 and is an early N series.
1975 or so
50-500 usd
Late 70's or so
You will have to call S&W to find out.
50-500 usd