The camera itself is surprisingly well-preserved for something that has "MADE IN GERMANY US-ZONE" on the back. Retail UK price was £10/4/4 for this model, which is pretty close to what I paid on ebay last week.
Medium format film seemed quite scary (separate paper backing! little sticky tabs! no canister!) but turned out very straightforward to use - spooling it into a tank was really smooth and honestly a bit less fiddly than 35mm. No need for cutting anything. Not sure this is going to be a regular thing, but definitely fun.
Technically really interesting to use as well - the shutter controls are all on the lens itself, so you set aperture and exposure, cock the shutter, and then that's it. No meter, but thankfully a phone takes care of that these days...
Focusing is entirely by a distance dial - this was the cheap model of the series, with no rangefinder. (You paid almost twice as much for that, but you did also get a wider lens)