N
Yes, there are the same frame.
I can say that the Smith and Wesson model 65-2 was made from 1977-1981.your handgun is included during this 4 year time frame.
The smith and Wesson model 10 has the K service frame.
The frame size of a Smith and Wesson model 66 is K.
The letter K prefix to your serial number was assigned to revolvers made by Smith and Wesson from 1946-1970.These were given to the models 14,15,16,17,18,19,48,53,66,67,68.It should be noted that all K prefix frames were target frame revolvers.Your serial number indicates that your Smith and Wesson handgun was made in the year 1964.
The frame.
The Smith and Wesson K frame revolvers were made from 1946-1983.
No, it is an L frame.
It is a K-frame.
Next smallest to the X frame.
K frame
Standard Catalog of Smith and Wesson Firearms by Supica and Nahas History of Smith and Wesson by Jinks.