"Georgios Sinas (Greek: Γεώργιος Σίνας, German: Georg Sina; 20 November 1783 – 18 May 1856) was a Greek-Austrian entrepreneur and banker. He became a national benefactor of Greece and was the father of another Greek national benefactor, Simon Sinas. He was also the founder of the National Observatory of Athens." - (en.wikipedia.org 25.10.2021)
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