Vintage Bell & Howell slide cube projector 981QZ with spare (Finstall B60)

Bought in America in the 1970s. It needs special cubes which you fill up with slides - spare box of 16 cubes is included. I can't remember how to make it work and the instruction manual is lost. So I don't know whether it does work. If you request this item PLEASE SAY WHEN YOU COULD COLLECT.

       
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