Vintage Antique Bausch & Lomb USA 7x50 Binoculars Military 6070 RARE

Vintage Antique Bausch & Lomb USA 7x50 Binoculars Military 6070 RARE. Only one removable Bakelite eye piece included/Also there is black Electrical Tape on the Leather strap=Also there is the letters/#'s CDL 20548499(I'm guessing its a Military Inventory or personal Military type number hand inscribed on the binoculars). Estate Sale Find in Southern California-Thanks.