May have Accidentally Quicksold my Gold Card Coach

I may have inadvertantly quicksold my Gold Coach for the Richard Sherman Ultimate Team 99 Set. Is there anyway I can get this card back? I think it's bogus you can quicksell the card in the first place, I mean you can't quicksell the other items for the set. Why are you able to quicksell those? I've put ALOT of time into getting all the items and just recently realized that I am missing three of my gold coaches which are needed to complete the set. Any help would be appreciated.