Smith & Wesson 19-2

[ohio58]

I have a Smith & Wesson Model 19-2 with 2.5" barrel blue with S&W combat stocks. I'm trying to find out the year of manufacture. Serial number K685xxx.
Im thinking it may be 1966 or 67' but not sure. Any information would be very helpful....thanks

 

[Starter52]

1966, according to Supica & Nahas.

 

[JellyJar]

Pictures please, if you can.