Variant spelling of doubloon; a Spanish or Spanish-American gold coin worth about $16 USD in historical currency.
From Spanish 'doblón,' augmentative form of 'doble' meaning 'double.' The suffix '-ón' intensifies meaning, making it 'the big double coin.' Related to 'dobla.'
When the Spanish minted doblons, they made coins so reliable and consistent that they became the world standard — American dollars only replaced them after the U.S. could prove it was more stable than Spain.
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