So it’s on an auction? Sorry I can’t give an informed opinion I didn’t know constellations were made with display backs. Something is giving me pause it looks off to me but I know nothing of this era of constellations. I’m sure someone will pipe in. The movement and the hands don’t look right but not long ago I came across some references I had never seen before that I though were not legit and I was wrong. Have you been seeking something similar to this?
It looks genuine to me, but in am unsure about the reference.
I did not find much info about Constellations from this era,
Sorry for the spelling errors, autocorrecture is german.
Aside from a few classic models, 80s watches are usually not very sought after. Perhaps that will change, but most collectors would not b me interested in that model. Probably most people here know little about post 70s Constellations.