I have a Model 39 pistol and I am curious as to when it was manufactured.

[slingshot67]

I will take some pictures and the serial number. I am unable to operate the slide to take it apart for cleaning. I also have a .22LR 6"bbl I want to know what model it is. Smiths seem to have numbers in different places. My model 15, 4"bbl. is also aroused my curiosity.
I got here without the information necessary.