Albert Einstein letter including the world's most famous equation, 'E = mc2' up for auction

Everyone has seen the famous equation—it is part of the background of our lives. But how many have seen it written in Einstein’s own hand? According to archivists at the Einstein Papers Project at Caltech, and the Hebrew University of Jerusalem (where Einstein’s papers reside), only three holograph examples are known—and none of those are in private hands. This example—the fourth—is being revealed to the public for the first time. Bidding for the The Einstein Archives of Ludwik Silberstein Auction opens May 13 & ends May 20, 2021. #AlbertEinstein #Artmyn