Tom is correct not all guns sent to England got marked, As officers were permited to provide there own Arms and some that went into special units were not stamped. Also it was war time and the rules breakdown, anything is possible. But to debate this pistol's providance on the current evidence, I don't belive it's an example of a Lend-lease gun. Because it was made way before the 2nd world war and could have entered Briton anytime. The only British Proof Marks are export marks. The gun could have come back to the U.S. after WWI and not seen WWII service at all. None of this can be proven, but it adds historical value to the gun. Whats that mean in $, I don't know but history is very interestng and helps keep my interest in our heritage of firearms alive. One more thing to remember lend lease ended when we entered the war. And then became foreign aid after the war.