butlersrangers,,  I came here to learn and I appreciate all the information you are giving me. I purchaced the tool on ebay. I see what you mean about the "US". It is of a different font than the ones in your pictures. There is no evidence of a 3,rd screwdriver being ground off. I checked it out under a microscope. When I recieved it it had some surface rust on it and old oil so I put it in my ultrasonic cleaner with a clock cleaning solution. That normally removes rust and gunk without harming the surface. That accounts for the new look I can see why someone would turn a 1903 into a krag lookalike but do they make complete repros?
Ken