Airmail cover franked with 1957 pair 7c brown red, 1961 1c blue green and 1956 25c bluish green 'Entrega Especial' EXPRESS issue (SG 693, 836 & E663) tied by ENTREGA ESPECIAL SANTO DOMINGO cds's in purple with straight line 'ENTREGA ESPECIAL' marking alongside with manuscript '8128' number. Addressed to CANADA. Very scarce issue genuinely used on cover.