Rare Roman gold coins like the Aureus are highly sought after.
Greek silver Tetradrachms command top prices due to their artistry.
Coins of famous rulers, such as Julius Caesar, fetch premium prices.
Unique coin errors from ancient mints can drastically raise value.
Coins from rare historical periods, like the Byzantine Empire, attract collectors.
High-grade, well-preserved ancient coins bring in the biggest bids.
Provenance matters—coins with well-documented history are worth more.
Limited-edition or extremely rare coins are auctioned for millions.
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