Jim---the line "variants" in the 56 set happen in many of the cards. They have been pointed out for some time, but not aware of any premiums to date. I think they are just print offsets
Dick Gilkeson I think listed it in his variations publications from the late 80s and early 90s and Richard, who posts here as brightair lists it in his lists
https://sites.google.com/site/richar...riations-lists
http://www.oldbaseball.com/refs/Vari...ifferences.pdf