項次 1686

1972 (20 Oct) Cross Harbour Tunnel and 1975 (30 Apr) Royal Visit illustrative FDC x5 (Yang C78, C100-101), former x1, latter x4 (in purple and red, Chinese and English inscription each), tied by different cds.

1972.10.20 海底隧道及1975.4.30 女皇伉儷訪港美術首日封共5件（楊目C78、C100-101），前者一件，後者四件（紫色及紅色，中文及英文印刷各一件），銷不同日戳。