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Einstein's 1929 handwritten letter filled with equations sold for $71,811
Times of India
October 23, 2026
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A handwritten letter by Albert Einstein, believed to date back to around 1929, has sold for $71,811 at RR Auction. Addressed to mathematician Chaim Herman Muntz, the one-page document contains detailed equations exploring Hamiltonian mechanics, covariance and invariance. Written in German, the lette
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