This uses roll film camera, and you never rewind roll film. It simply runs from one spool to the other.
The 530/16 was the first of the Super Ikonta B models. It uses separate windows for focusing and composing. The successor model, 532/16, features a unified viewfinder/rangefinder.
The cameras otherwise operate the same. You can dry fire the camera. The process is somewhat complex to explain. However, you can release the shutter using the small tab near the bottom hinge.
The Super Ikonta employs double-exposure prevention and also autoframing. You get just 11 exposures, rather than 12.
It's likely that the Super Ikonta will need to be serviced. Prices vary according to who is performing the service.
The Super Ikonta, like nearly all Zeiss Ikon cameras, is an excellent photographic machine. The leather bellows on Zeiss Ikon cameras generally have survived the decades intact. Of the Zeiss Ikon cameras that I've serviced in past years, fewer than five have needed new bellows.