Hasselblad PME-90 TTL Metering Prism.  Excellent condition.  Works perfectly.  I am only selling because I mostly use the waist level finder with my Hasselblad.  Instruction manual included.  I am curious to try the 45 degree prism finder and would be open to a trade. Comes with back cover as well.  Please do not hesitate to message me if you have any questions or would like additional photos