In operation from early 1648 to early 1649 during an 11 month siege, surrendering December 22, 1648. Issues are generally lozenge or octagonal pieces with a crude representation of the castle and a denomination, but appear to also have struck the Fortuna issues without a denomination. Original production is estimated at 250-500 pieces with a denomination, with about 15-22 surviving. Issues include Halfcrowns, Shillings, and a very low number of gold pieces.