K, l, n
Yes
A K frame revolver
No difference. CTG is the abbreviation for cartridge. A revolver marked 38 Special CTG, or .38 S&W Special CTG is simply indicating that it is chambered for a .38 Special cartridge. This IS different from .38 S&W, and older, shorter, fatter, less powerful cartridge.
@1964
CTG stands for Cartridge
You must call S&W
it was made around the 1960's
Open cylinder. Serial should be stamped on frame just below barrel under yoke.
Cartridge
What are you asking?
ctg = cartridge