(1) single piece Western Electric 275A tube. Accurately referred to as the "baby 300B" by many audiophiles....excellent, NIB condition still in original WECO box. Just tested NEW on our calibrated TV7 tester (the world's standard for WE tube) -- this tube tested STRONG, better than new 52 / minimum =34 (65%). Will be triple boxed and guaranteed received working - NO DOA. This is still the early type of construction...with large HALO getter (not solid disc), tall 40mm ++ dark black plate, heavy filament, thick support MICA

The 275A was one of Western Electric's early directly heated Triodes and used in PP & SE circuits of the 1930's portable high fidelity, theater sound amplifiers - like the "silver" circa 1935 Western Electric D95508 portable amp ( a wonderful "baby" PP amp , which likely sounds as good as a WE 91 -- if you consider it's PP just about the same drive....). This is the ST bottle design, and very nice & reliable and great sounding!! (The early balloon design, though gourgeous are much more prone to shorts and are more fragile.)