Ok, went to a local estate sale, and can say I did rather well. Walked out the door, with an Underwood M1, for $300. Here's what I have so far: Underwood receiver/barrel. Barrel is dated 4-43 M2 Stock - Walnut, Winchester marked Slide is angled with W in the well Magazine catch is modified with support arm Adj. rear sight(stamped) H in shield Barrel band, type III, marked SI Serial # 1401xxx
I think I did pretty well, since I was also able to pick up five 15 round magazines for a total of $20 for all five. All five are USGI.