The filters are in ex condition, but do not have cases. $12 for all 3 shipped to the US. Paypal or check.
Pentax's 645, ME Super, Spotmatic II
Minoltas SRT 102, SRT 202, Maxxums 7000 and 7000i
Canons A1(X2), EF, TX, FT QL, EOS 630
many Nikons-black F2 eye level, chrome F2AS N90s, F4E, N2000, N6000, N6006, Nikomat FTN, N5005