Distinctive blue and white-banded pottery, rare Cornishware Tumblers complement the entire line of beautiful pottery products. Like Cricket and the Wellington boot, T.G.Green & Co.'s Cornishware's status is a cast-iron British classic evoking both pride and passion as a symbol of great ‘Britishness’ across the globe. First produced in the 1920's, the distinctive pottery owes its name to an employee who said it reminded them of the blue sky and white-crested waves of Cornwall. Adorned by millions and extremely prized by collectors, each piece if finished by hand, so there are natural variations in the color and glaze making each piece unique. Dishwasher, microwave and oven-safe, all Cornishware has a backstamp shield that is fired onto every item to ensure authenticity.