Well.....I'm the proud winner of a mint condition 151M-C
It has an earlier model rear target sight from a 151M-B and the C front sight. Everything is there but the 4M4c telescopic sight.
B-E-A-utiful walnut stock, and described as very low use with sharp, bright rifling and bore. I'm happy as a hog sleep'n in the slop trough
Overnighting payment tomorrow, hope to have it by the weekend for a range trip!