1940 National Dobro Amp: 73 Years Old, 99% Original, and Sounding Great !!!

This video features a 70+ year-old National Amplifier that was built in the very early 1940's utilizing a National Dobro electrodynamic speaker, probably left over from N.D. amp production in the late 1930's. It is in amazingly good condition, almost completely original (other than two capacitors and a power cord), and still functions perfectly.
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