Commemorative coin 2 euro, Atmospheric Steam Engine, 300th Anniversary. The motive features a technical drawing of the machine based on a design by engineer Isaac Potter. The depiction is detailed enough to illustrate the mechanism of the steam engine across the entire mine. Also included in the design are the inscription "SLOVENSKO" and the anniversary dates, "1722" and "2022". The atmospheric steam engine uses the power generated by a vacuum to pump out groundwater from mines.
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