Never heard of it. And Mikrolisk doesn't give us much information either, I'm afraid.....
As for the watch in general, "Automatic" and "21 Jewels" is quite positive. However, usually, such descriptions are augmented by something like "Incabloc" whereas things like "Unbreakable Mainspring" (as well as "Shockproof" and "Antimagnetic"= on the dial point towards cheap pin lever movements. My guess would therefore be that the watch has a high jewel count pin lever automatic movement. Something like this:
bidfun-db Archiv: Uhrwerke: EB 8100