1958 Toshiba 6TR-186
Coat pocket radio, thermosetting plastic cabinet
5 13/16 x 3 1/4 x 1 5/8 inches / 148 x 82.5 x 41 mm
Six transistors (Toshiba: 2S12, 2x 2S13, 2S14, 2x 2S15, + 1N60 diode)
Four 1.5-volt AA cells
Manufactured by Tokyo Shibaura Electric Co. Ltd. (Toshiba), Kawasaki, Japan
Often referred to by collectors as the "Toshiba Black Lace" because of the black lace fabric encapsulated beneath the clear plastic speaker area. It shares the same cabinet dimensions and tuning dial / vol knob layout as the slightly-later 6TR-188 but it has a different circuit and chassis layout.