Revueflex E is rebadged Zenit E made by order of Revue Company from West Germany.
This camera possibly from first butch of rebadged Zenit E.
Serial number of the camera on the pictures is 67041122.
While this camera ordered by West Germany company it was bought in US.
Camera distinguished by all engraved letters and numbers, even on speed dial. It's made with better overall quality then Zenit E. Carrying case is different then on Zenit E, most likely it made outside the USSR and fitter to camera before sale.