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Message:: [QUOTE="Finn235, post: 7752325, member: 98035"]I have two Greek electrum coins Lesbos, Mytilene EL HecteRight on the cusp of the transition from Archaic to Classical style, 478-455 BC[ATTACH=full]1327622[/ATTACH] And this one from Phokaia, one of the later examples at about 377-336 BC[ATTACH=full]1327623[/ATTACH] Other civilizations that produced electrum: After their zenith in which they made staters to the same standard as the Roman Aureus, the Kushans debased their staters; this one of Kipunadha looks to be cut with silver, although I am unaware of any studies into the metallurgy of these.[ATTACH=full]1327624[/ATTACH] After the transition from Kushans to Kushano-Sassanian to Kidarite, the purity was cut again, although my understanding is that they were cut with both silver and copper, which I think would technically make it rose gold! Durlabha Deva[ATTACH=full]1327625[/ATTACH] Much further to the east, Japan was IIRC the last to use electrum, cutting their gold coinage with silver as they struggled to adjust to its growing economy but limited metal supply under the closed economy of Sakoku, which was further exacerbated when the borders were opened and foreign merchants discovered that the Japanese valued silver about 3x as highly as the rest of the world, relative to gold. Tenpo 2 shu (1/8 ryo) (1830s, about 30% AV, 70% AR)[ATTACH=full]1327628[/ATTACH] Meiji 2 bu (1/2 ryo) (1868-1870, 22.3% AV, 77.7% AR)[ATTACH=full]1327627[/ATTACH][/QUOTE]