MZ/MuZ Riders

Came across this for sale on Ebay and noticed it seems to have a twin leading shoe front brake, in fact it looks very much like a Jawa/CZ one.

https://www.ebay.co.uk/itm/MZ-Trophy-25 ... 1438.l2649

Retrospectively: yes, it looks a bit like my 634, but only a bit - not identical. The casting of the brake plate is different, but of course it might come from a different model.
That does look like a steel rim though, as is customary for Jawa (not CZ, those are alu too).