Sans and streiffe sold Japanese binoculars under their own name in Illinois. Went out of business in 1960. JB12 - Orora Kogaku Co Ltd and JB17- Otake Kagaku Kogyo Co Ltd Tokyo manufactured.
From aunt when she passed away belonged to my uncle who passed away in the 70’s
Thank you for submitting your item for appraisal. This appears to be a japanese binocular of the late 1950s which was quite advanced and a good quality buy at the time of production. Since then optics have advanced and prices for new binoculars of similar quality have gone down. Currently identical binoculars sell in the price range listed. There is no measurement for the sentimental value you might attach to it.