[MrCinatit]

If I recall correctly, righthander Bob Uecker posed for a couple of his 1960s cards with the Braves batting lefthanded.
Nobody noticed.

About a year after the infamous Ripken card was released, Pacific Cards released a set of cards from the short-lived Seniors League. Craig Nettles' brother Jim was in that league. He struck a pose remarkably similar to Billy's - his bat also had an obscenety written on the end.

That 1989 Fleer set with Ripken was remarkable in its collection of errors. Two Tigers had the backs of their cards reversed. A Tiger pitcher had Alan Trammel in the background adjusting himself (this was corrected).
This lead to an "error craze", in which collectors began more actively searching for errors and those corrections. The craze dropped fast the next year, when it seemed almost every card had an error, which was eventually corrected.