(Dec 30, 2015)
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| Year | 2014 | | Weight (g) | 31.1 (1 oz) | | Diameter (mm) | 40 | | Country | Ghana | | Face value | 5 Cedis | | Metal | Silver 999/1000 | | Mintage (pcs) | 500 | The wooden box has been made in high quality
Extremely low mintage of 500 pieces worldwide
The coin's obverse depicts an image of the experiment to create the vacuum
On top of coin the inscription "German Inventions 2014 - The Vacuum" and on bottom of the coin the weight and the Silver fineness
The coin's reverse depicts the effigy of Her Majesty Queen Elizabeth II, the face value and the country issue
Ultra-high vacuum chambers, common in chemistry, physics, and engineering, operate below one trillionth (10-12) of atmospheric pressure (100 nPa), and can reach around 100 particles/cm3
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