*NEW VARIATION* (I think) for 1963 Topps Tony Oliva Rookie

Hey everyone! I was looking through some of my cards recently and I noticed the back of my Tony Oliva rookie had ink missing partially in the M in Minor on the back. I decided to ask my brother to show me his to see if it was possibly a legit variation and not just a one-card printing mistake. As luck would have it, his Oliva had the exact same thing as mine. This led me to look on ebay at about every Oliva I could find, and surely enough I found a few more with ink missing in the exact same spot. It seems significantly rarer than the normal, with three copies out of a few hundred on ebay being the same variation. I have pictures attached below: first is the back of my Oliva, second is what a correct version looks like, and after that are the others that are missing ink in M variations I found on ebay. I believe this fits the criteria of a variation, considering cards like the 1958 Pancho Herrera "Herrer" and 1967 Ed Spiezio missing most of "pie" are basically the same deal; all of them are missing ink in a specific place. What do you all think?