I thought this was fun: I recently had this exchange with some ass-clown on eBay re a 1926 Greiling Max Schmeling RC:
Him: I know that you “know your stuff” and the grading companies “consult you” but this is clearly not Carpentiers rookie. The ever abundant 1922-1923 Amalgamated Press Sporting Champions is.
I replied: I completely agree: it is not Carpentier's RC. It is, however, Max Schmeling's. And FWIW Carpentier appears in the 1915 Cope's set so the 1922-23 cards are not even his first British issues.