"Many Happy Returns" Queen Mary Visits Worlds End -- 'Birthday Smile' H.M. Queen Mary pictured on her 81st birthday eve visit to Chelsea exhibition to-day (Tuesday). H.M. Queen Mary, paid a visit to St. John's Mission Hall, Worlds End, Chelsea, on the eve of her 81st birthday, to-day, (Tuesday), to see an exhibition of Chelsea products-including china in Prints furniture, and other antiques during the last 300 years. Eight china exhibits are from her personal apartments in Marlborough House. May 25, 1948.