The hum is due to dried electrolytic caps stored over decades being lack of use. Once the electrolytic caps get replaced then this is a nice collectable tube radio. The item "Rare Cute vintage Granco FM tube Radio circa 1954, grundig telefunken zenith" is in sale since Thursday, March 25, 2021. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Tuners & Tube Tuners". The seller is "vintage_collector6" and is located in Vienna, Virginia.
This item can be shipped to United States, all countries in Europe, all countries in continental Asia, Mexico, Canada, Australia.