Essential for meteorology, medicine, industry and scientific research, thermometers are not the result of a single invention but an evolution spanning about 2,000 years. <.p>
While thermometers’ exact origins are unknown, several historians have credited the first instrument for measuring temperature to Hero of Alexandria, who lived circa 10-70 AD in Egypt.
A people who worshiped gods affecting temperature were the Aztecs, whose civilization flourished in central Mexico before the Spanish conquest.
* Original Packaging and Numbered Certificate of Authenticity
* Struck from 99.9% pure Silver
* Real working thermometer set directly into the coin
* The 2018 Thermometer 2 oz. Silver Coin has an extremely limited mintage of only 2,500!
Featuring an antiqued finish, the coin is 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.
On the left, or cold side of the thermometer dial is an Aztec, or Mesoarmerican, stylisation of a snowflake. Opposite is a similarly styled depiction of the sun’s rays. The reverse also incorporates The Perth Mint’s traditional ‘P’ mintmark.
Issued by the Perth Mint as legal tender of the South Pacific island nation of Tuvalu, the coin’s obverse reveals the thermometer’s sensor which is encircled by Aztec-style patterning, the Ian Rank-Broadley effigy of Her Majesty Queen Elizabeth II, monetary denomination and the 2018 year-date..
Each coin is presented in a classic grey display case, within a stylised shipper, and is accompanied by a Certificate of Authenticity. The Certificate of Authenticity sits within the coin case and there is a worldwide limited mintage of only 2,500 coins.
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