Ridgway Potteries cup and saucer, 'Greek Key', from the Cunard collection used in the tourist class dining room in mid 20th century on 'Queen' ships.
The cup measures approximately 2 1/2 inches high by 3 1/2 inches across without handle; the saucer is 5 3/4 inches across and 1 1/8 inches deep.
Condition is excellent. One small chip on unseen bottom of cup.