"Half moon front sight in (blued) serial Number 3729 all orginal with
Matching grips."

Haven't gotten to review the thread to see if there is a half-moon front sight variation with a later serial number than this because I'm called away to supper.

What is the latest half-moon sight model seen by the Forum? Does anyone have a notion of when the last barrel with the half-moon front sight was screwed into a frame?