I really need a Brit Proofed barrel...

I really need a Brit proofed barrel for a late war (1708XXX) 1911A1, the barrel with "COLT .45 AUTO" at about 7 o'clock above the link and a single letter code on the bottom. I know they are tough to find, but if one of you guys has one languishing in a parts bin and would like to turn it into cash I am willing to pay too much. Let me know. Thanks.

Marked like this:

https://www.milsurps.com/images/impo.../2gtb78m-1.jpg

https://www.milsurps.com/images/impo...1/4fz587-1.jpg