2 oz Silver Thermometer Antique Coin minted by The Perth Mint. 

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. While the thermometer's 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.

The reverse of the coin features an antiqued finish, with an operational dial thermometer including both Celsius 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" mint mark.

Each Silver Thermometer Antique Coin contains 2 troy ounces of silver minted in .9999 purity. 

Limited to a maximum mintage of just 2,500 and with previous editions of the release sold out as well, this would be an excellent addition to your collection. 

As this item is Pre-Owned in Good Condition, delivered items may differ from images shown.