Let the cursing begin. A new old stock BA-6 output transformer in it's original box. Factory new look, tests/measures fine with clip leads in a BA-6A circuit. Note the stock # on the box, which is what you find in the manual parts list, the drawing # on the transformer which doesn't appear on the schematic, and see that it actually has more taps than are shown on the schematic. In fact every original output on a BA-6 has more taps than the schematic shows. The unmarked taps are a tertiary feedback winding, and other output taps including 150/15/7.5/5. On BA-6's you find a lot of this octagonal shaped can, which is a Chicago Standard version. There are also Langevin, Thordarson, and UTC makes of this same part.