Want to Buy WTB B 50 filter with two lugs

I want to buy (beg or borrow) a B 50 filter with two lugs. NOT the B50 3 lug filter for Hasselblad. Especially a yellow filter and/or a UV filter. Of course a whole set (yellow, green, orange, red, UV and Skylight) would be best. Or did anyone make a filter adapterfor this mount. The filters are for my 50mm 1.8 Ultron, one of my best lenses.