Todd, I was in the right place at the right time, someone had listed it with a BIN of 59.99 right before I checked ebay. It was a bit of a gamble as it did say Standard Biscuit in the title but it didn't actually picture the back of the card!
http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWNX:IT
Also, the Henry Johnson's are 100% a 1921 issue BUT were issued almost simultaneously with the E121 Series of 80's, so just slightly after the Standard Biscuit, Herpolsheimer, Holsum(type 2's), and from what I can tell the Shotwell's. I suspect if you look at enough E121 Series of 80 card's of Pinch Thomas you would probably find ons with the funky "C"'s.