Just found out exactly what model my MZ is,,,the exact same bike is on ebay uk right now listed as an MZ ETZ 251e Lux.
There is a good photo of the original brochure mentioning the lux and econo models.
So apart from someone fitting older model rear indicators, a new seat cover and a slightly longer silencer I now know the rest is as left the factory.
My bike even has the same rear rack which may have been fitted by the uk dealers?
I done a google check for MZ ETZ 251e Lux....nothing apart from that one bike on ebay.
Nothing special about the bike but at least I know the mudguards, headlight fairing, square instruments etc are all original. It looks like it maybe should have the lever guards as std too.
I'll try put a pic up later