Can anyone enlighten me as to the era/origin of this watch ?
I can't find any details anywhere except that it was manufactured maybe between 1990 and 1994 and is fitted with an ETA 2824-2.
The watch is pre-1994 and was made when France Ebauches had the say in Glashütte.
France Ebauche once owned the Glashütte Original after the Wall came down. GO was sold by the "Treuhand" to the French movement manufacturer France Ebauches SA. This company tried to save itself from bankruptcy by means of German know-how and the cheap labour in Eastern Germany. The new selfwinding movement (later known as the GUB 10-30) should compete with the Swiss movements produced by ETA, and was therefore developed specifically with a high momentum and maximum universality in mind. Before the short-time owner of the Glashuette watch manufactory had to develop a new movement, they found already a good movement in Glashuette: In 1978, the "Volkseigener Betrieb" (=People's owned company) Glashuetter Uhrenbetriebe (GUB) brought out their last completely new construction, the cal. 11-26, dubbed Spezichron.
This Spezichron was modernized in several steps under control of first the France Ebauches, then the Treuhand-Anstalt, and finally of Heinz W. Pfeifer, until it found its way as cal. 10-30 into the new watches of Glashuette Original. Under control of the Treuhandanstalt, which, from 1990 to 1994, took over the former East German state-owned companies and sought to bring them into the private sector, the movement cal. 10-30 was completed and used in a new and very cheap line of watches after 1993.
In 1994 Glashütte Original was established.
I have no clue as to grade of movement, elabore, etc....
Standard, no blued screws, nothing.
Is it worth adding to a collection of German timepieces ?
As a witness of time ? YES.
The pre-1994 Glashütte watches have been made in a wide variety but not in large numbers. Some have been produced with "GUB" on the dial, some with Glashütte. The GUB Flieger with ETA 2824-2 and rotating bezel usually fetches about 300 to 400 Euro on ebay.de.