Gather around the tent heater boys, this one may make you go hmmm? I'm getting ready to give the old gal a face lift, so I'm stripping her to the bone. After working on the rear sight assy for 45 minutes I got the dang thing a part. What do I find. Lots of sand! I turned the sight cover over and scratched in the bottom of it is : 4 (heart) Kate Now I"m bummed. I secret that has been hiding for 68 freakin' years. So now my M1 has a name... For the Love of KATE weird eh?