John, thanks for the additional info. I will try to add some additional photos to the forum you saw the others on since I am most likely restricted on this site from adding them until i become a basic member. (soon I hope) I did find in my search (and a different subject) that mine is missing the hold open latch. It shoots but does not feed the rounds and while digging deeper for answers discovered it's absence. The ser#3791 has slide and side plate # 23, bolt, firing pin, and part with rear sight on it # 87 and every thing else #91. extractor is unmarked. So if you now where I can find this hold open latch in the USA it would be gratefully appreciated.
Also it's really to have what seems to be a rare find even though it's still a mixed up jumble of parts. daven