New - Never Used

Mamiya Press 6x7 Viewfinder Frame / Mask L.90 & L .150

6x7 L.90 frame mask optical viewfinder mask or ground-glass framing guide used for medium-format or large-format camera systems (such as Mamiya Press or Linhof setups) matched with a 90mm lens (L.90) 0r 150mm lens (L.150)