This Randall was given to me by my grandfather. He purchased it in 1965 after waiting for 1 year on a waiting list. I didn't know the which knife it was until a very kind person on another knife forum told me it's a Model 3 in O-1 carbon steel. There were a bunch of carbon marks on the blade so I just finished polishing it with Mother's Mag Polish. I was fearful that is I left the carbon marks it would start pitting the steel.

Anyway thanks for reading.