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|Composition:||Bi-Metallic Nickel-brass clad Nickel center in Copper-nickel ring|
|Denomination:||1 000 000|
|Description:||The coin shows the Treaty document signed by the six founding countries on a background evocating the paving of the Piazza del Campidoglio in Rome, where the signing took place on 25 March 1957. Its design was selected following a competition organized by the European mints.|