Registered cover franked with 1930 5c orange and 30c blue green with 'HABILITADO 1930' overprints (SG 486 & 489) tied by MONTERREY cds with printed blue on white 'UPU' registration label alongside and red 'Starburst' registration seal on reverse tied by various transit marks. Addressed to TUNISIA. A scarce issue used on cover and a very unusual destination.