... but the straps are looking a little strange 
Unfortunately, it will be a Glashütte watch for home and garden only,
because you need a power socket for the strap 
By the way, there was electric industry in Glashütte during the GDR era.
When I edited the word "Zeitschaltuhr" (timer) at the search button on eb... Germany I got some hits with old Glashütte timers. But they do not look as great as Jocke's timer.
Kind regards
Gerd