Want to Buy WTB: 77mm YELLOW, ORANGE, AND ND FILTERS

Maybe someone has some very good cond. 77mm filters they want to sell?
I'm looking for a dk. yellow, orange, and ND .6 ,.9 or possibly a 1.8 ND or similar.
Tiffen, Hoya or B&W preferred.

I do have stuff to trade: 67mm filters, some Omega D2 neg carriers, 4x5 film holders...
Thanks ,
Gary

I've got a .6 Tiffen if you're interested?