31.1 (1 oz). BU – Brilliant Uncirculated. GOLDEN ENIGMA Elephant African Wildlife Black Ruthenium 1 Oz Silver Coin 100 Shillings Somalia 2015. Fifth issue of the Golden Enigma Edition. The coin shines in a combination of black and gold, finished with two precious metals: fully plated by Black Ruthenium and then refined in a complicated process with 999 gold. The challenge was to create a high detailed gold finishing on the black ruthenium. The coin comes in a black box with an individually numbered certificate printed in gold color. The coin’s obverse depicts two beautiful elephants looking for a waterhole. In the background a typical african tree and three birds flying above it. On top of the coin the inscription “African Wildlife”. On left the inscription “Elephant” and on right the weight and the Silver fineness. The coin reverse depicts the coat of arms of the Somali Republic, the issue date 2015 and the face value. Ruthenium and Platinum Group Ruthenium is a chemical element with symbol Ru and atomic number 44. It is a rare transition metal belonging to the platinum group of the periodic table. Like the other metals of the platinum group, ruthenium is inert to most other chemicals. The Baltic German scientist Karl Ernst Claus discovered the element in 1844, and named it after Ruthenia, the Latin word for Rus’. Ruthenium usually occurs as a minor component of platinum ores; annual production is about 20 tonnes. Most ruthenium produced is used for wear-resistant electrical contacts and the production of thick-film resistors. A minor application of ruthenium is its use in some platinum alloys. The platinum-group metals abbreviated as the PGMs; alternatively, the platinoids, platinides, platidises, platinum group, platinum metals, platinum family or platinum-group elements (PGEs) is a term used sometimes to collectively refer to six metallic elements clustered together in the periodic table. These elements are all transition metals, lying in the d-block (groups 8, 9, and 10, periods 5 and 6). The six platinum-group metals are ruthenium, rhodium, palladium, osmium, iridium, and platinum. They have similar physical and chemical properties, and tend to occur together in the same mineral deposits. However they can be further subdivided into the iridium-group platinum-group elements (IPGEs: Os, Ir, Ru) and the palladium-group platinum-group elements (PPGEs: Rh, Pt, Pd) based on their behaviour in geological systems. The item “GOLDEN ENIGMA Elephant Black Ruthenium Silver Coin 100 Shillings Somalia 2015″ is in sale since Tuesday, December 29, 2015. This item is in the category “Münzen\Münzen International\Afrika\Sonstige”. The seller is “powercoin_italy” and is located in Roma. This item can be shipped worldwide.
- Jahr: 2015
- Erhaltungsgrad: Unzirkuliert
- Metall/Material: Silber
- Herstellungsland und -region: Somalia
