collection in five large mint sheet albums containing never hinged sheets in sets or singles as issued, featuring mostly PRC from 1980s-90s, some duplication, highlight of the lot is the second book which contains China 866-94 (1949 Sun Yat Sen set) in full sheets of 200 or panes of 100), also a bit of Hong Kong and Republic of China, fresh and mostly very fine throughout, excellent group, worth inspection, owner's Scott catalogue value $8,800+