OK, so heres the good news - The H and P on my barrel is exactly like the barrel pictured on the web sight, figure 1a, WWI Colt Military, SN 120,000 - 400,000. It also has the number 5 stamped in front of the lugs like figure 7b. It also has a partial G (government) stamp low and left of the 5. It would be larger than the 5 if whole. The website said the G stamp did not appear until around 710,000. Any guesses on that?
Now, the bad news. Since the barrel had little original finish, some rust and light pitting, I decided to "clean it up". It now has zero finish, except for the 2 coats of oxpho-blue I just put on it! The bore and chamber looks very good for its age with no pitting. So given the current condition of the barrel, whats it worth? Does it have any collector value? Thanks for all your help guys, 1911's aren't my thing and I'm still learning!