Before 1927 because the gun has the large "mushroom" style ejector rod knob, only partially visible here. After 1906 because of the rear position of the small trigger return spring stud on the left side of the frame. The serial number would help us nail it down.
The small logo on the left side probably points to production after WWI, but maybe not. I'm a little vague on trademark stamping dates this morning, and I don't have the energy to go look it up.
If you see the stamp MADE IN U.S.A. on the right side of the frame in front of the trigger guard, it's from later than 1922. If that phrase is not there, the gun is from before that year.
The small logo on the left side probably points to production after WWI, but maybe not. I'm a little vague on trademark stamping dates this morning, and I don't have the energy to go look it up.
If you see the stamp MADE IN U.S.A. on the right side of the frame in front of the trigger guard, it's from later than 1922. If that phrase is not there, the gun is from before that year.