Registered cover with manuscript 'O.H.M.S.' at top franked with 1921 3d purple on pale yellow (SG 213) tied by BARBADOS R.L.O. cds dated 15 NOV 1921 with printed blue on white 'BARBADOS' registration label alongside. Addressed to USA with transit & arrival marks on reverse. A fine cover showing a second day of issue use of the 3d.