Revue as said Guido was the trademark of FotoQuelle from Neckermann-Versand who distributed several cāmeras from Japan and mainly from GDR and Russia. The metal shutterblind is na early attempt to use Zeiss jena Pentacon Six lenses because in 1971 there were only two extra lenses for Kiev 88 - Mir 3 and Tair 33.
Those Pentacon six lenses were already sold by FotoQuelle and a new body could be a good start point for promoting their selling, although it did not prove as such.
More recently there were Kiev 88 CM with pentacon six and Kiev Big Six also Arax presumible to be mounted in Czech wit original Ukranian parts
LP
See a brief story on :
http://www.russianplaza.com/salut%20kiev%2088%20c%20cm.htm There are others