Macau Postal History 1910 (13 Sep.) envelope to Hong Kong, bearing 1902 Crown, Carlos I surcharge Issues 6a on 200r bisected stamp (handwriting "Not Valid" in red) tied by Macau c.d.s., circle "T" h.s., framed "Hong Kong/D.L.O." h.s. and "Prohibited" h.s. showing the horizontally cut stamp is not accepted, with Hong Kong arrival date stamp.