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2023 Cook Isl. $20 Antikythera Mechanism Selectively Gilded 3oz Silver Coin
Regular price
$979.00
Sale
Pulled up from the bottom of the ocean in 1901, the Antikythera Mechanism is thought to be one of the earliest versions of an analog computer! And its early - the machine has been dated back to at least 87BC! Possibly used to predict astronomical events, such as eclipses, the ancient mechanism is the subject of this super collectable.
An absolutely spectacular coin, each huge 65mm, three ounce, 99.9% pure silver Antikythera Mechanism collector issue has been selectively plated in pure gold. Limited mintage of just 111 coins worldwide.
Specifications
|
Monetary Denomination: |
$20 |
|
Country: |
Cook Islands |
|
Fineness (% purity): |
99.9 |
|
Metal: |
Silver (gold-plated) |
|
Minimum Gross Weight (g): |
93.3 |
|
Maximum Diameter (mm): |
65 |
|
Maximum Mintage: |
111 |
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