About 4000
BSA actually stands for "Birmingham (UK) Small Arms" they first made guns; hence the 3 crossed rifles on the badge. Yamaha, who first made pianoes, copied the idea putting 3 crossed tuning forks on their badge.
The BSA Silverstar air rifle DOES exist, but is fairly rarely encountered. BSA came out with it just before they merged with Gamo, a spanish airgun company, around 1986. After the merger, BSA stopped production, and Gamo began producing the CFX, a rifle identical in design and function, but of lesser quality and aesthetics(synthetic stock, cheaper finish, etc.). Estimates of BSA production numbers in recreational air gun circles range from less than 1,000 guns made to as low as a few hundred. Contact BSA directly if you need more information. Silverstar info. in the public domain is hard to come by, and a bit sketchy at best.
The BSA A50 is a type of motorcycle. The first one was built in 1962. It is a British made motorcycle and the first one was called a Royal Star. The price tag for one back in the day was $775.
Swiss Arms, UTG, BSA, Daisy and Crosman
According to the Motorcycle Mechanics Road test of November 1964 a BSA A50 Royal Star would have cost £293 and 19 shillings.
BSA cadets were made between 1946-1959
The BSA Mercury was made between 1972-1980
One can find reviews about the BSA B44 Shooting Star at several websites. Wikipedia, bikesales and realclassic are to name but a few. Motorcycle Classics also cover this model.
Yes and no. BSA scopes fit on a couple of grooves machined in to the top of the air chamber. These grooves don't exist on the BB but you can get blocks that have the grooves on and could glue or otherwise fix this block on the BB then the BSA scope would fit.
Boy Scouts of AmericaIn air guns and sporting equipment it means: Birmingham Small Arms Ltd.
The BSA A65 star motorcycle would cost around å£3000 or above. As it is a classic motor cycle. However buying one would be a fairly hard challenge, as there aren't many for sale right now.