Today I found this Marvin watch on one of the local flea markets for the price of two glasses of wine in a decent restaurant.
On the movement I find the number 508, But I cannot find a Marvin calibre 508 anywhere. And no 508 calibre of any other brand that looks like this one either.
The regulator looks special, I don't think I've seen one like that before.
Does anyone know what kind of movement this is?



Also note the small second. Its a disc in stead of a hand. Never saw that one before either.




The case is chrome with the usual stainless back. There's only a (serial)number to be found on the outside (576xxx)
If anyone can tell me more about the movement and maybe the model, I'd be greatful.
Have a nice weekend.