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Swedish Coppers - About Page
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File:Medals issued by Christina in Rome, 1655-1689, Sweden, by G.F. Travani, M. Soldani, and or G.B. Guglielmada - National Museum of Finland - DSC04078.JPG - Wikimedia Commons
A Nordic heavy weight: the second heaviest coin of Classical numismatics - CoinsWeekly
What modern (being used as currency today) coin (not limited to any one country) contains the highest composition of copper? - Quora
Swedish Coins Old Collectible Sweden Currency Ore Krona Kronur Sverige Money 1950 Bronze Thee Crowns
What are some of the strangest currencies in history? - Quora
History of copper currency in Sweden - Wikipedia
Thaler - Wikipedia
What are some of the strangest currencies in history? - Quora
File:Copper banknote with death threat for counterfeiting, 10 Riksdaler, 1803 AD, TM24662 - Tekniska museet - Stockholm, Sweden - DSC01544.JPG - Wikipedia
Banknote - Wikipedia
6 Öre Kopparmynt - Gustav III - Sweden – Numista