Can anyone tell me what these brakes are? I managed to find a couple of pictures of them online but with no info. If anyone knows anything about them, let me know!
Possibly East European with a name like that? Did Hungary ever have a bike industry?
No idea but there are clues to their cheapness. The cable adjuster nut is inexpensive alloy, the blocks are a basic, non-cartridge type and the rust on the mounting bolt speaks volumes. Campag these ain't.
If you are looking to rebuild them, the parts are probably easily substitutable (if that's a word) with those from any of a dozen makers.
it looks like a standard 57mm drop, not too disimilar to a low end Tektro DP from the 90s.
If it works, don't sweat it, grease, adjust and continue using.