Vintage 1930 1940s UTC LS-61 20 Watt Output Transformer 6L6 / KT-66 / 5881 / 807.  $12.00 S&H in the US. Thanks and Good Luck!

Here is a Vintage UTC LS-61 "Linear Series" Tube Amplifier 20W Output to Line and Voice Coil Transformer. Push pull triode: 6AS7G, 6080, 6L6, 5881, KT-66, 807, 1614. See pics for pinout and specs. It is in very nice original cosmetic and working condition as shown. It measures about 4-1/2"w x 3-1/4" d x 4-1/4"h.