[ScottFandango]

Bob, is it a coincidence that out of the 300 E90-1 cards for sale on ebay right now, there are ZERO Shaded back variation cards for sale...

there are no R Marquard, J sheckard, R demmitt, Tenney, H wagner batting (ALL SIMILAR RED BACKGROUNDS) for sale!

there are no Bob green , hooks wiltse, Froome, Roy Thomas (all Blue green with mountains) for sale!

this is no coincidence....it is because these shaded back cards were one of (if not the last) series produced for the E90-1 series (also the rarest)..

you cannot call it a "printing error or defect" if it only appears in certain cards, that happen to be the "tougher" cards also....it would be a "random printing error" IF it occured in ALL or MOST cards, which it in fact DOESNT....IT NEVER IS SEEN IN THE COMMON CARDS....again, It IS NEVER SEEN In The ComMon Cards!!

so, it may appear on the surface (no pun intended) that this "shaded back" variation that I discovered is a printing mistake, but in fact it reveals one of the more rare print runs that occured between 1909-1911....just use the cards for sale at this very moment as a hint....

especially fun is if you line these "shaded variations" up next to eachother, they all look very similar, YET look AMAZINGLY different to the rest of the set!

Enjoy this 100 year old discovery, a gift from me to the collecting World!