This super rare Teacup and Saucer set commemorates the Official Opening of the St Lawarence Seaway in Canada by Queen Elizabeth II and Prince Philip in 1957.  The saucer measures approximately 5 1/2 inches in diameter, the cup measures just over 3 3/4 inches in diameter.  The cup still has the original tag describing the set.  Great addition for those collecting English Royalty items or fabulous looking sets.  This memorable set will be carefully packed and shipped with care.  Thanks for looking