How much does an import mark kill value?

[Eugen]

Originally Posted by rhuff

I own a 1944 Colt 1911A1 that is a "lend-lease" gun to England. It has a number of British proof marks on it, including frame, barrel, etc. In this case, it would only be correct if it has these proof marks. It does not have any import markings, as I purchased it before they were required.

Now that, in my opinion, is a horse of a different color. That might add value given the historical significance.