Thanks for the info Bob. I have heard that 1000,s of Lyman's were ordered and that the first 1,500 M1D,s were with lyman scopes. I think the Lyman is a better scope than the M84. More rugged and better made. If the M84,s were delayed till after the war in only makes sense that D,s and C,s used Lyman,s as fast as they could make them.