The title mostly says it all. I don't need two 35mm systems so I'd rather keep my Nikon and use a 40mm Ultron on it. My 1.4 Nokton is in great shape. It's the single-coated version. I think I've got all the stuff, including the shade.
Once I've made a trade I'll probably list my Bessa R2A body.
I can provide photos later in the week if asked.