In 1465 the Coventry mint was established where nobles, half-nobles and groats were coined, but it was disbanded a few years later, and the Golden Cross inn, built in 1583, now occupies the site. St. Mary's Hall, a guildhall built and extended 1340–1460, served as the combined headquarters of the united guilds of the Holy Trinity, St. Mary, St. John the Baptist and St. Katherine. Following the suppression of guilds in 1547, for a time it served as the city's armoury and (until 1822) its treasury, as well as the headquarters for administration for the city council until a new Council House was officially opened in 1920.