I ended up with the blue variety, which are numbered to /25. And, of course, the base version of the "E" card popped up on eBay the same day I won this card. However, it was short printed (?) to /75 cards while the rest of the set had a 200+ card run per letter, which might explain why I had such a tough time tracking the base card down.
I like that it sticks out from the rest of the nameplate.
Now I need to find a new "white whale" to hunt down. Maybe it's time to add some vintage cards to my collection in the form of some 1910 Murad Collegiate cards.