Got a pair of Zeiss B T* 7x50 Rubber Armoured Bins i got off and old freind years ago,they have independent focus for each eye which i dont really like and are a bit heavy for lugging about for any length of time. Was thinking about selling them to get a scope but dont know what the B T* stands for !!!any ideas what sort of price they would be worth they are in good condition apart from someone has removed the flip on rubber caps !! thanks