It's not RM but FJA and info I got is it's an Ithaca arms, production 1943-45. the book reads un numbered slide which checks out but the slide is a colt(at least it has the rearing colt in the middle of all the wording on the left side. (to set the record straight I looked at it first in
the new save the planet lighting which we all know is xxxx and when I picked it up today I saw FJA in sun light as plain as day)( no pun intended) My next question is did Ithaca use colt slides? is this a rebuild? I have taken some pics and as soon as I can I will post them.