Einstein's 1929 handwritten letter filled with equations sold for $71,811
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 letter was sold with its original envelope, postmarked in Potsdam, offering a glimpse into Einstein's…
We haven't written up this one. Times of India has the full story — the link below goes straight to it.