Vintage Alpha Calendarwatch 1940-1970’s Swiss Made

Vintage Alpha Calendarwatch, manual and runs great! Hard to find any definitive info on this brand, except that it was a Swiss brand from the 40’s to 70’s and made some great mid-range watches. Bracelet is in good shape, but one of the lugs is chipped on the back. Case back:Stainless Steel BackWaterproofCalendar Watch AntimagneticIncabloc Alpha #696406 Inside: Alpha Watch CoSwiss Movement:Alpha Watch XYH 17 JewelsSwiss