RARE NOS Bendix Red Bank EXPERIMENTAL Vacuum Tube MUSEUM QUALITY RBX-103356 OOAK LOOK AT ALL 24 PICTURES AND THE SCREENSHOT OF GOOGLE INFORMATION LITERALLY A UNICORN. HAS GOOD CONTINUITY LOOKS BRAND NEW WAS IN A BOX WITH A FEW OTHER TUBES MARKED NOS AQUIRED FROM A LARGE LIFETIME COLLECTOR IN CALIFORNIA. SEE ALL PICTURES