Second version of Revue 4 which was made from the FED 4b for Foto-Quelle, West-Germany. On this version "Revue 4" is serigraphied in white (engraved on the first version). Same other characteristics as the FED 4L in the Wiki.
It was equipped with Fed/Industar-61.
After JLP, this camera was made c. 1971, but the pictured one has the logo of the Moscow Olympic games (1980) too, which I had never seen before. Perhaps a special serie. Anyway, it's not a common camera.
Serial number of the pictured camera: 007141 on the baseplate.
Princelle never wrote that THIS pictured camera was made in 1971. Actually Princelle even didn't mention an Olympic version.
The serial #007141 should be from the years 1979/80. But Foto-Quelle stopped selling Revue-3 and Revue-4 few years ago in 1976. (Lenny)
It's sad that FED decided to stamp 6-digit serials on the bottom plate of the back door, because those doors can be accidently changed easily.
FED-3, Fed-4 and Fed-5 doors are the same, stamping the serial on the door might have simplified production.
There are big stamped serials (around 21mm long for 6 digits)
and small serials (around 13mm long for 6 digits). (Lenny)