In addition to all the other marks, the Liege Bank of Proof also had the Controller of Proof stamp the gun. This was done with a letter with an * over it. After about 1924 the names are pretty solid, before that it is any one's guess. This had been going on for decades. To my knowledge the Belgians were the only one's who identified the Controller.

The gun would have been choked Extra Full and Improved, I believe.

Pete

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