Obverse: The center shows the value in euros above the denomination in francs, all surrounded by 12 stars symbolizing Europe. The inscriptions “RÉPUBLIQUE FRANÇAISE”, “100 FRANCS” and “15 euro” appear around the design.
Reverse: The reverse depicts a Celtic cross and the Rock of Cashel, a historic castle and religious complex in Ireland. The year “1997” is shown below, with the inscriptions “ROCK OF CASHEL” and “IRLANDE” around the image.
About the coin: This commemorative 100 Francs / 15 Euro silver coin was issued in France in 1997 as part of the “Monuments of Europe” series. It honors the Rock of Cashel, one of Ireland’s most important historical and religious landmarks associated with early Celtic Christianity. The coin is struck in .900 fine silver, weighs 22.2 g and has a diameter of 37 mm, making it a sought-after collector’s item.