I'm still trying to find a resource for dating older Nachtmann pieces myself, as I've acquired a fair number of them by now. It's not in the current catalogue.
Looking at the style of it, it should be art deco 20s-30s at the very earliest, and 70s at the latest. This style was still highly popular in the 50s, probably continued well into the 60s and 70s. I don't think it's 80s or later.
Astrid