Derek, you have a good eye!
I have known about the variation for a little while and have one of each. I believe it is a true variation (just hadn't advertised it as such yet as it took me some time to find the version missing the first ") as I have found multiple copies of each. The version with both of the quotes around the name is MUCH easier to find. The "Pep" Young I have with a Type 3 back has the corrected two "" around the name.
Also cementing the fact that it is a legit variation is that I have found both one " and two "" in the W575-1 set as well (blank backed E121 cards), also I have seen a Holsum Bread card with the one "
It would appear that at the beginning of the E121-80 print run the first " was missing or lost and was subsequently "fixed". JUST FYI: Both have the Type 1 regular back.
