Another serie of the Revue 3, a FED 3b made for Foto-Quelle, West-Germany.
The body reads "Revue 3" in serigraphy. It was engraved on the precedent serie.
The lens is always the Fed/Industar-61 zebra (F421 by Princelle).
This camera is not so easy to find.
Foto-Quelle catalog Winter 1972/73, page 32:
DM 99 camera with Industar-61
DM 24,50 case
DM 99 Jupiter-12
DM 159 Jupiter-9
DM 119 Jupiter-11
DM 69 Uni-VF
Foto-Quelle catalog Winter 1975/76, page 14:
DM 99 camera with Industar-61
Pictured camera: #740608 (on the shoe).
Known serial number range (please extend the range with your serials):
7-digit serial number on the backside of the top:
#8503622(sovietcams.com) to #8540363(fotua.com)
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, wide digits (more than 2mm high)
and small, narrow digits (less than 2mm high).