Prototype of the FED-5B, Based on the FED-3 b mechanics and sporting a FED 4 type exposure meter.
Squared off and enlarged Body. Back opens on hinges, with the rewind crank located under the body.
New Frame counter with center moving arrow and fixed numbes on film advance lever.
Japanese inspired design. Jupiter 8 and Jupiter 3 lenses. Only four of them were built.

(Photo from collection of Viktor Suglob)

add pictures : FED 7 serial number 690001 (from Alain & Claire BERRY collection).