The Hasselblad PM5 Prism Viewfinder Blue Line (EXC+) is a camera accessory compatible with Hasselblad cameras, specifically the 500 C/M and similar models. Made in Sweden, the Blue Line version is compatible with a larger number of Hasselblad camera bodies, such as the  500C, CM, EL, and CW.  Check Hasselblad references for a complete list of compatible bodies.  See photos for details on the condition.  The glass elements are in great condition with no scratches or fungus.  There is a minor cosmetic scuff on the top.  Rubber eyecup is included.