Joseph Jerome Lefrancais de Lalande, French astronomer, 19th century. Lalande (1732-1807) was professor of astronomy at the College de France for 46 years from 1760, and in 1768 he was appointed director of the Paris Observatory. Obverse of a commemorative medal.

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Joseph Jerome Lefrancais de Lalande, French astronomer, 19th century. Lalande (1732-1807) was professor of astronomy at the College de France for 46 years from 1760, and in 1768 he was appointed director of the Paris Observatory. Obverse of a commemorative medal.

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