Pentax BA-61 Focusing Screen for Pentax 67II brand_Minolta The Nikon 50mm f1

The Nikon 50mm f1

So if your situation is similar to that described earlier in this paragraph

an actual optical viewfinder that zooms along with the lens

with a replacement baseplate if yours is missing

The negative carrier is a versatile Durst Adanev 72 with dial-in cropping to adjust the film gate from 110/half frame size to 6x6cm (or anywhere in between)

Pentax BA-61 Focusing Screen for Pentax 67II brand_Minolta The Nikon 50mm f1The Pentax BA 61 is a microprism focusing screen for the Pentax 67II medium format SLR camera. In excellent condition, with only very minor surface marks which will not affect function. Includes plastic clamshell case and original box.