Delve into history with these amazing Antique Vintage Busch Binoculars, a remnant of World War 1. The 40mm objective lens diameter makes it perfect for bird watching or star gazing. Its compact design makes it portable and easy to carry around. These binoculars are a great addition to any collection and are sure to be a conversation starter. I received the binoculars from my grandfather - a prominent Atlanta military man. As a kid I painted the silver metal part black, and it may come off to make it more authentic.