Coin collecting may have been a niche hobby in times past, but an increased interest in numismatics -- whether due to ...

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In 2011, one of these coins sold for $7.4 million. Another version of it sold for $2,415,000 in 2005. Valued at just over $6 million, the Umayyad gold dinar is extremely rare and highly coveted by ...

In addition to the trio of coins detailed above, these five pieces are highly sought after and command a princely sum at auction whenever they appear. 723 Umayyad Gold Dinar: This coin sold for ...