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This is a list of time capsules. The register of The International Time Capsule Society estimates there are between 10,000 and 15,000 time capsules worldwide. [1] An estimated 95% of time capsules are lost track of by the fifth anniversary of their burial. [2] An active list of time capsules is maintained by the NotForgotten Digital ...
List of most expensive coins Price Year Type Grade Issuing country Provenance Firm Date of sale $18,900,000 1933 1933 double eagle: MS-65 CAC United States: King Farouk of Egypt: Sotheby's [1] June 8, 2021 $12,000,000 1794 Flowing Hair dollar: SP-66 CAC United States Neil, Carter Private sale [2] January 24, 2013 $9,360,000 1787 Brasher ...
English: This chart shows the nominal price of gold along with the price in 1971 and 2011 dollars (adjusted based on the consumer price index). The historical gold price was obtained from www.igolder.com; CPI was obtained from www.rateinflation.com. The data is in section Chart Data.
It is widely debated when time capsules were first used, but the concept is fairly simple, and the idea and first use of time capsules could be much older than is currently documented. [2] The term "time capsule" appears to be a relatively recent coinage dating from 1938. [3] In Poland a time capsule dating to 1726 has been found. [4]
Time Capsule I weighs about 800 pounds (360 kg), while Time Capsule II weighs about 400 pounds (180 kg). [5] Time Capsule I was made of a non-ferrous alloy called Cupaloy, created especially for this project. [6] Designed to resist corrosion for 5,000 years, the alloy was made of 99.4% copper, 0.5% chromium, and 0.1% silver. [7]
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The International Time Capsule Society (ITCS) is an organization devoted to the subject of time capsules. Founded in 1990 at Oglethorpe University in Brookhaven, Georgia, United States (following the lead of a precursor group established in 1937), the ITCS tracks the creation and status of time capsules in countries around the world.
Nuggets are usually 20.5 to 22 karat (k) purity, meaning they are 83% to 92% gold by mass. Gold nuggets in Australia are often 23 k or slightly higher, while Alaskan nuggets are usually at the lower end of the spectrum. Purity can be roughly assessed by nugget color: the richer and deeper the orange-yellow, the higher the gold content.