My 22/33 SN is 361090 however I have no shipping information. The SN matches in three locations, under barrel flat, cylinder and front of grip. There is an assembly number 4573 in two places under crane and yoke. The grips look custom or aftermarket not S&W. I don't know the name for the front sight but I attach a photo of it. The rear sight base has two screwed. This is a 5 screw frame.
Sorry I don't know how to post photos from my iPhone photos. The front site is not a partridge but has a slight slop front and back of the front sight and round on top (not modified). Condition is excellent (about 90% original bluing). Small logo on left.