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IdealCoins is an extensive database containing images and information for the highest condition United States coins. Condition rankings show which coin is the finest, what other grades are available for collectors, visual comparisons, and historic ownership and pricing information.

The data for each coin is gleaned from grading services, numismatic auction houses, set registries, private sales (where confirmable), numismatic publications, population reports, old auction catalogs, and other sources.

The database is updated constantly to include the most recent sales data. Images are updated constantly to include the best representations of the actual coins. Algorithm-based census rankings are updated constantly using analyses of reported and estimated grades.
Ron Guth