I'm afraid I'm too late to start the ball rolling, I can only pass it on to the next player.

Shown before in the 2019 "yellow bikes for September" thread:

ZEUS "2000 Titanium" 1977











Fortunately I got the sales receipt from the former = first owner, so I know my bike was sold in August 1977 by Germany's than biggest road bike retailer, Bruegelmann, who probably sold most of the Zeus bikes in our country. You nearly always find the "Bruegelmann" stickers on german Zeus'. Still, Zeus are quite rare in Germany.
Maybe the "Titanium" was a model specifically built for the german market. But I am not sure about that.
The original owner also kept the factory's specification tag and the corresponding advertising flyer (see pics).

Even the smallest components, like the top tube cable clips or the pedals's dust caps, are Zeus-labelled.

More information on Zeus:
Zeus derailleurs