In 1463, coins were minted in Reginald's Tower by order of the Irish Parliament, which, at that time, was meeting in the city. The coins had the words "Civitas Waterford" struck on one side. In 1495, the tower’s cannons successfully beat off the forces of Perkin Warbeck, the pretender to the throne of Henry VII. Cannons from the tower sank one of his ships during an 11-day battle. This was the first successful use of artillery by an Irish city. A cannon from this ship was recovered from the River Suir in 1901. This victory earned the city its motto "Urbs Intacta Manet" - "Waterford remains the unconquered city".