Category:Hoi-Hao From Stamps of the World Pages in category "Hoi-Hao" The following 5 pages are in this category, out of 5 total. Hoi-Hao 1901 Indo-China optd HOI-HAOHoi-Hao 1903 Indo-China surch HOI-HAO value in ChineseHoi-Hao 1906 Indo-China surch HOI-HAO value in ChineseHoi-Hao 1908 Indo-China surch HOIHAO value in ChineseHoi-Hao 1919 Indo-China surch HOIHAO value in Figures & words Category: Countries