You may get more input if you raise this Q in the post war forum. My go to guy for anything on Topps salesman samples is Griffins. If you do not otherwise get the input you are seeking you can send him a pm here. I collect salesman samples with each of my Topps sets. I try for uncut panels if I can find them but did end up with 3 separated cards like yours for 1953. The Mantle is a nice touch. You can see the other known 1959 panel combos in the link
http://net54baseball.com/showthread....alesman+sample