This beautiful 2 Oz Silver coin is dedicated to an essential object for meteorology, medicine, industry and scientific research – the Thermometer. The coin features an operational thermometer insert, has a wonderful design, has an Antique Finish quality and comes in a themed case, along with the Certificate of Authenticity. Limited mintage to 2.500 pcs worldwide..
A thermometer is a device that measures temperature or a temperature gradient. A thermometer has two important elements: (1) a temperature sensor (e.g. the bulb of a mercury-in-glass thermometer or the digital sensor in an infrared thermometer) in which some change occurs with a change in temperature, and (2) some means of converting this change into a numerical value (e.g. the visible scale that is marked on a mercury-in-glass thermometer or the digital readout on an infrared model). Thermometers are widely used in industry to monitor processes, in meteorology, in medicine, and in scientific research. Some of the principles of the thermometer were known to Greek philosophers of two thousand years ago. The modern thermometer gradually evolved from the thermoscope with the addition of a scale in the early 17th century and standardisation through the 17th and 18th centuries.
The reverse of the coin features an inset with an operational dial thermometer including both Celcius and Fahrenheit scales. The thermometer’s face portrays an Aztec-style sun in the middle. The thermometer is surrounded by Aztec-style patterns and iconography based on the circular Aztec agricultural, or solar, calendar. The fire-breathing sun god Tonatiuh is represented at the top holding an arrow in one hand, a flaming torch the other and wearing flame earrings. At the bottom is Itztlacoliuhqui, the god of frost and cold, breathing frost and carrying an arrow. The obverse of the coin reveals the thermometer’s sensor which is encircled by Aztec-style patterning, the Ian RankBroadley effigy of Her Majesty Queen Elizabeth II and the inscriptions: “2oz 9999 Ag” – the weight of the coin and the fineness of the Silver, “2018” – the year of issue, “2 DOLLARS” – the face value, “TUVALU” – the issuing country and “QUEEN ELIZABETH II” – the name of the Queen.
|Weight (g)||62.2 (2 oz)|
|Presentation case (box)||Yes|
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