Duchess Tranquillity Vintage Bone China 24cm Plate Blue Forget-Me-Not Pattern Dinner Plate £10.00 Quantity: at £10.00 each 6 in stock. Duchess Tranquillity Pattern Vintage Bone China 24cm Plate A pretty border of blue forget me not flowers and gold gilded scalloped rim. Pretty blue forget me not flowers border. Duchess Bone China made in the Staffordshire Potteries. In pristine condition.