Rollei Twin MSC-300 + lenses, std. 90mm and the more rare 60mm Xenotar lenses.
Visible are also:
Zeiss Triotar *T Loupe (albeit everything is marked "Made in Japan", seemingly by Kyocera)
Zeiss Talon 90mm MC lens for the Zeiss Royal AF projector.
Zeiss sold its Slide Projector factory to Leitz. Nowadays these projectors are known as Leica Pradovit.