I have this lovely Zeiss 6x9 folder with a Hugo Meyer rangefinder and an uncoated Zeiss Jena 10.5cm f/4.5 lens in an ancient Compur.
It only takes sheet film holders. The back does slide off which suggests a rollfilm holder may have once been available, I don't know.
Not sure of the exact model or vintage, but it does take nice pictures, at least in monochrome. The lens is tack sharp, but has that "vintage" lower contrast look. A few years ago, I had shutter serviced so it actually is in fine fighting form:
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