I guess an appropriate crest and seal like this O'Dwyers: Or maybe some obsolete Nevada like the brown $5 MGM with 3 orange & 3 mustard inserts. I think it's a K value in TCR.

Actually I would pay chips for information on many of my other UNKNOWNS which can be found here:

http://www.angelfire.com/extreme/chipper/NNevMiscAD.htm

I have several one-known chips. Finding out where they are from would illicit a higher reward.

It's a complicated formula.