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2. Prices of chemical elements - Wikipedia

   en.wikipedia.org/wiki/Prices_of_chemical_elements

   This is a list of prices of chemical elements. Listed here are mainly average market prices for bulk trade of commodities. Data on elements' abundance in Earth's crust is added for comparison. As of 2020, the most expensive non-synthetic element by both mass and volume is rhodium.

3. List of British banknotes and coins - Wikipedia

   en.wikipedia.org/wiki/List_of_British_banknotes...

   Prior to decimalisation in 1971, there were 12 pence (written as 12d) in a shilling (written as 1s or 1/-) and 20 shillings in a pound, written as £1 (occasionally "L" was used instead of the pound sign, £). There were therefore 240 pence in a pound. For example, 2 pounds 14 shillings and 5 pence could have been written as £2 14s 5d or £2/14/5

4. Platinum as an investment - Wikipedia

   en.wikipedia.org/wiki/Platinum_as_an_investment

   Platinum is traded in the spot market with the code "XPT". When settled in United States dollars, the code is "XPTUSD". As the cost of platinum per ounce fell, the cost per ounce for other metals in the platinum group - especially palladium - rose strongly. As of November 2022, palladium sits at around US$1900 per ounce, compared to US$980 for ...

5. Platinum coin - Wikipedia

   en.wikipedia.org/wiki/Platinum_coin

   The coin had a face value of 100 Estonian kroons, a platinum purity of 999/1000, a weight of 7.775 grams, [14] and a diameter of 18.0 mm. [15] The coin was designed by Tiit Jϋrna and produced by the Mint of Finland with a quantity of 3,000 pieces.

6. American Platinum Eagle - Wikipedia

   en.wikipedia.org/wiki/American_Platinum_Eagle

   The 1 ⁄ 10, 1 ⁄ 4, and 1 ⁄ 2 troy oz coins are identical in design to the 1 troy oz coin except for the markings on the reverse side that indicate the weight and face value of the coin (for example, .9995 PLATINUM 1 OZ.

7. International Prototype of the Kilogram - Wikipedia

   en.wikipedia.org/wiki/International_prototype_of...

   The Metre Convention was signed on 20 May 1875 and further formalised the metric system (a predecessor to the SI), quickly leading to the production of the IPK.The IPK is one of three cylinders made in London in 1879 by Johnson Matthey, which continued to manufacture nearly all of the national prototypes as needed until the new definition of the kilogram came into effect in 2019.

8. Platinum - Wikipedia

   en.wikipedia.org/wiki/Platinum

   Platinum is a chemical element; it has symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name originates from Spanish platina, a diminutive of plata "silver". [7] [8] Platinum is a member of the platinum group of elements and group 10 of the periodic table of ...

9. The Queen's Beasts (coin) - Wikipedia

   en.wikipedia.org/wiki/The_Queen's_Beasts_(coin)

   The intrinsic value of the 10p coin was widely reported as being close to the face value and given this, dividing a face value of old 10p by the weight of the cupro nickel in the coin (6.5 g), and multiplying that intrinsic value per gram by the weight of the £5 brilliant coin (£28.28), the estimate of about £0.5 was produced. [17]