These binos aren’t particularly collectible, nor are they very expensive, but they are a nice pair of WWII 7×50 US Navy BuAer Mark 21 binoculars.
I liked them because they have flip out amber filters and shaped rubber eyecups. Despite my own advice to never buy binos off ebay again, I bought them off ebay. The seller is same fellow from whom I bought my 1960s/70s Binos Prismatic No2Mk3 6×30 binoculars a week or so ago. I was very impressed with those binoculars and I was not disappointed with these ones.