Thanks, Jim. I have that book, but the picture is so dim as to preclude my being able to see those scope knobs. I am just excited to see those rifles were still around in the early forties. I had an old Marine tell me he helped destroy many of those rifles when he helped salvage the scopes in the 50's. He said he had two drums of smashed receivers and barrels. I didn't know whether I should believe him, but now it makes sense.
Jim