It's been a while since I've put together a top 5 "Fan Favorites" set. Just as a reminder, these are not necessarily the 5 best players from the franchise. They are just cards I decided to make of players that I like. So as David Letterman used to say before Stupid Pet Tricks, "This is only an exhibition. This is not a competition. Please, no wagering."
Reggie's season in Baltimore was never really preserved on cardboard. Although there have been several custom cards created in honor of his single season in Baltimore, this might be the first custom snack-cake-card.
Reggie Jackson was traded to the Orioles just days before the start of the 1976 season. After the season he was granted free agency and went to the Yankees in November of 1976. Topps went from having him in an A's uniform on his 1976 issue to a poorly airbrushed Yankee uniform on his 1977 issue.
Topps did created a pre-release proof card of him in an Orioles uniform but on a Yankees card.
By the time the actual set was released the photo was replaced with the airbrushed version.
There have been several versions of Cards That Never Were of Jackson as an Oriole including this alteration of the Topps proof card found on Camden Chat:
There have also been several custom cards of Jackson on 1976 Topps cards. Here are 4 I found with a quick google search. The 2 regular issue Topps cards are Bob Lemke's, the 1st traded card comes from White Sox Cards, the 2nd from The Baseball Card Blog.