After reading the last post I did check the barrel in the ejection port area and can see a crown over a V with the intwined GP above it. The V is distinct and the P, but had to use a magnifying glass to make out the other markings. Barrel has rough bore, but rifleing is visible. Glad to have the gun, but it is sad to see what the improper care has caused. Based upon the information provided in this post, there is a chance this 1911 may have seen service/use in WWI. It is of interest to me as I look this old gun over to wonder its history and I appreciate the additional information I have gleamed about the proof marks.