Product code: 3 antique audio Transformers hot Apollo Colu
These three Transformers look like hot they were made before 1940 based on the design of the labels. One of them is an Apollo audio Transformer ratio 5 to 1. Another is a Colombia amplifying Transformer 4 B+ type C60 to. Ratio 3 1/2 to 1 from the Columbia radio Corporation in Chicago USA. And the last one is a thordarson Electric Manufacturing company from Chicago USA and the type is not easily readable.
These three Transformers look like hot they were made before 1940 based on the design of the labels. One of them is an Apollo audio Transformer ratio 5 to 1. Another is a Colombia amplifying Transformer 4 B+ type C60 to. Ratio 3 1/2 to 1 from the Columbia radio Corporation in Chicago USA. And the last one is a thordarson Electric Manufacturing company from Chicago USA and the type is not easily readable.