A rectangular black metal housing enclosing a transformer, two contacts either side. Nameplate reads: “Type R-14 Ratio 3 to 1 / All-America / Trade Mark / Audio Frequency Transformer/ Guarantee No.
All-American Radio Corporation type R-15 AF transformer in original box. Marked: "Type R-15 Ratio 5 to 1 / All-American / Audio Frequency Transformer / Guarantee No. 103475 / All-American Radio Corp. ...
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