It appears that it might be one of the Monnin cased divers. Similar Quartz example here:

FS: Rare Vintage Rodania 200m Submariner | WatchCharts

Rodania Submariner Excellent condition Swiss quartz movement Flat black dial Even patina on markers 39mm case 43mm with crown Plexi crystal 19mm waffle strap Stainless steel bracelet $250 Shipped CONUS Attached Images

watchcharts.com

 

Wow yeah, its pretty the same watch minus the automatic movement. This quartz appears to be in better condition. Can you explain a bit of those Monnin cases?? Were they a case provider to numerous "medium to little" swiss brands?? What year you think this one is?? mid 70 or 80s?

 

I don't know the model but it looks like a nice looking old watch. The lume on the hands match the dial lume in color, the watch has been worn for years and has some great battle scars. What is the shop asking for it?

 

They are asking 350 euros, pretty sure i can strike a better deal if i asked. What do you think? Its a nice beater vintage diver.