I propose SICURA date watch from the 70s with 39mm case, spectacular three-dimensional silver dial, plexi glass and screw-locked steel back. The movement is a self-winding mechanical BFG158 date that I had serviced and lubricated in April. I paired it with a red high-quality Italian-made suede leather strap that matches perfectly with the dial indexes. The images you are viewing give a perfect idea of the conditions in which the object is found.
I remain always available for any further information and images.