cover 1929 (May) Express envelope to Miami, marked "Via Air Mail", bearing Special Delivery 1918 5d. in combination with Staircase 1d. and KG V 1d., all tied by Nassau c.d.s. and showing "SPECIAL DELIVERY" h.s., all in magenta, and showing arrival d.s. (14.5) on reverse. Attractive. B.P.A. Certificate (1971). Photo