After I told my dad about the swift responses I got when inquiring about my vintage Eldor he suddenly produced this watch from a dusted leather folder. Apparently it belonged to my grandfather and was given to my father a long time ago. No longer working when he got it he decided to hold on to it as a keepsake. However inspired by my love for vintage watches he has decided to let it get repaired (at Jan Ubels).
In the meantime, any kind of information is most welcome!
the markings around the case back read:
stainless steel back
the image is that of St-George slaying the dragon
wear your watches in good health!