Macao. 2 avos on Half of 4 avos Carmine (159) with selvage on a registered cover to Shanghai, tied by light cds in 1911. An orange registry label "Provincia de Macau" at side. A 1903 13a Gray Lilac (93), tied by the same postmark, and postmarks from "Hong Kong" and "Shanghai" on reverse. The cover with minor toned spots.