Christening Tankard Plain Pewter. This is a classic, straight sided Plain Child Tankard with a Georgian Handle and a stepped foot. The Plain Pewter Tankard is highly polished and finished to a very high standard of British workmanship. The Child Christening Tankards and Cups vary from 80mm to 90mm tall and hold approx. 170 ml. The plain Tankard is presented in a blue and pink spotty gift box. It is a lovely gift for any child and has lots of room for engraving.