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25 euro - NIOBIUM - The Microcosm - Austria - 2017 - BU
25 euro - NIOBIUM - The Microcosm - Austria - 2017 - BU
Cod: OST 2017-12
€85.00
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Year
2017
Diameter
34,00
Composition
Ag-Niob
Weight
16,50
Quality
BU
Mintage
65.000
Face Value
25 Euro
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Quantity:
€85.00
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25 euro - NIOBIUM - The Microcosm - Austria - 2017 - BU
25 Euro Silver/Niobium coin.
The means of transport for this journey is a rather unexpected one
the butterfly. A shining example is found in the raspberry-red and grass-green niobium centre of the coin’s obverse. But the journey of discovery really begins on the coin’s reverse, where a microscopic view of a butterfly wing is shown at the top of the centre. Moving clockwise we go even deeper with the help of an electron microscope. But that is not the end of the expedition: the bottom half of the coin shows a cell, its structure and even its core. What makes the Silver Niobium coin so special is the fact that its niobium tones arise without the application of colour, purely through light refraction on an extremely thin, transparent oxide layer. Microcosm coin truly glistens with knowledge.
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