Since I don't live in the USA or Canada or travel there (I visited the USA once in 2005), I can't give you any advice based on personal...
The Ancient Chinese State of Chu Gold Ying Yuan is still the record holder and I don't expect that record to be broken anytime soon..., but this...
The oldest known Croatian coin is up for auction tomorrow, if I win it, I will post it here.
German Empire Gold 10 Marks of Wilhelm I (minted in Berlin, Prussia in 1875): [ATTACH]
Roman Silver Denarius of Geta (minted in Rome sometime between 200 and 205): [ATTACH] [ATTACH]
South Africa Gold 1 Rand (minted in Pretoria in 1980): [ATTACH] [ATTACH]
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