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TIL of the Photorevolver, a camera hidden inside a non-functional firearm invented in 1882, which allowed the user to pull the “gun’s” trigger to close the camera’s shutter. Only 14 photorevolvers were built, with only a handful thought to survive today, with prices between $50,000 and $120,000.

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9YJdp TIL British prime minister Harold Wilson was so unliked by senior members of the army and MI5 that there allegedly were discussions about a military coup against the government in 1974
XER16 TIL that Mozart was among the top income earners of society back in his day and lived lavishly, earning about 10,000 florins/yr vs 25 fl/yr for laborers and ~500 for some in the upper class. He was also not buried in a pauper’s grave, just that only Aristocrats were allowed to have private burials.
KYv1J TIL Jeanne Calment, a French woman who is credited as the oldest person to ever live, having lived to 122yo. In 1965, at 90yo, she sold her French apartment in exchange for a right of occupancy and a monthly revenue of €380, until her death. She received double the value of the property by 1995.
9w0b7 TIL that the first ATM was developed and built by Luther George Simjian, and installed in 1939 in New York city by the City Bank of New York. Six months later, it was removed due to the lack of customer acceptance
kMR1 TIL Smile Mask Syndrome is a psychological disorder in which subjects develop depression and physical illness as a result of prolonged, unnatural smiling. First described in Japan in 1983, this is attributed to the great importance placed on smiling in the Japanese service industry.