An assorted group of about 17 Hong Kong, Macau and mainland China covers, showcasing various commemorative issues franking, first day cds
An assorted group of about 17 Hong Kong, Macau and mainland China covers, showcasing various commemorative issues franking, first day cds and instructional markings.一組約17件港澳及中國大陸封片，展示了各式紀念票、首日日戳及指示戳記。
