Good day, and welcome to my contribution to Sunday Stamps. Today's theme is inventions and discoveries.
First I must say I don't have this stamp in hand - I have taken its image off the web.
A USA stamp from some time ago, when postage was 20 cents for a first class letter. Nikola Tesla invented much more than the induction motor; alternating current for one. There is now a line of electric cars named after him.
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