Du verwendest einen veralteten Browser. Es ist möglich, dass diese oder andere Websites nicht korrekt angezeigt werden. Du solltest ein Upgrade durchführen oder einen alternativen Browser verwenden.
Good to see some progress on the bike. Did you finally weigh it?
As for the year, the square rear brake bridge (GPM?) indicates early 80s. The magazine Les Cahiers du Cycle you posted with a similar orange frame is I believe from July 1981. (to be confirmed)
The Stronglight 107 crank is in the...
The orange frame seems to be drawn/painted by hand. It has oval cutouts and it's possibly from the mid-70's. The early ones typically had round cutouts.
Your bike needs these decals: https://www.flickr.com/photos/cyclecrank/3313931857/in/dateposted/
Hello. I'm based in France and don't speak German :-(
But the browsers nowadays are able to translate pages :-)
I have a Gemini too and discovered your forum while researching them.
They are unique bikes, full of nice details.
Yours is a large frame. Is it built with SL or SP tubes?
Saw that frame for sale too and asked the owner about the colour. He said it was 'champagne' as the base, with some paint sprayed for decoration like in the 80's. He didn't like it and repainted it red. So the yellow you see may not be the original.