I had this issue once in the past. It's actually a compliance violation and put my account in "medium" (yellow).
Sorry about your luck on that one. Great card and good luck on the sale.
Currently looking for the following comic Books:
United Comics: 21,22,23,24,26
Tip Top: 173 & 184
Peanuts 1 (1953)
Peanuts: 1-4 (1963-64)