11 November 2023
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The armillary sphere is the subject of the second issue in the 'Historic Instruments' coin series.
Historic Instruments - Armillary sphere Images
The armillary sphere, the 2nd issue of the 'Historic Instruments series', is an early marvel of astronomical ingenuity. In its complex form, this remarkable device elegantly captures celestial and terrestrial circles.
With the Earth at its centre, this celestial globe is equipped with degrees for angular measurements.
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During the 17th and 18th centuries, such splendid contraptions graced the parlours of academics, suspended in the air, perched upon ornate stands, or clutched by an elegant handle.
The armillary sphere was allegedly invented separately in ancient China during the 4th century BC and ancient Greece during the 3rd century BC.
Coin details
| Country | Cook Islands (the) |
| Year | 2024 |
| Face Value | 10 Dollars |
| Metal | Silver.9999 |
| Weight | 2 oz |
| Size | 45 mm |
| Quality | Antique finish |
| Mintage | 1500 |
| Technique | smartminting® (Ultra High Relief) |