Posted By: 
Andy BaranHal,
You could easily argue that the Mayo IS Nichols ROOKIE card.  The Old Judge card lists him as a minor leaguer.  For this reason, I have the Mayo rather than the Old Judge as well.
I know lots of you non-rookie card collectors think these conversations are silly, be we love these debates.
P.S.  Wait till I show you what Rookie Card I am purchasing privately 