1964, 20th Anniversary of the People's Army, two water- color essays of approved design (colors are slightly different), both signed by artist H. Khan at the bottom, picture sizes 208x134mm and 128x210mm, nice quality, VF, each one has issued stamp affixed at the bottom (Image)

1965, Communist Personalities, Lenin, Marx and Engels, set of three water-color essays of approved design (close to issued colors), all signed by artist H. Khan at the bottom, approximate size 133x197mm, VF and rare, each one has issued stamp at the bottom (Image)

1966, 45th Anniversary of Chinese Communist Party, complete set of two water-color essays of approved design (the last one with gold background instead of brown on issued stamp), all signed by artist H. Khan at the bottom, approximate size 154x208mm, perfect condition, VF and rare, each one has issued stamp attached (Image)

1967, 50th Anniversary of the Russian Revolution, water- color essay of not approved design in rose and carmine, no value indicated, presumably for 6xu denomination, signed by artist H. Khan at the bottom, size 98x149mm, fresh, VF and rare (Image)

1975, 30th Anniversary of Independence, water-color and application essay of souvenir sheet (issued stamp of 12xu is affixed over), signed by artist H. Khan at the bottom, actual picture size 130x95mm, VF (Image)

1977, 60th Anniversary of Russian October Revolution, set of three water-color essays of accepted design (different background colors), essay of 1d painted without denomination, signed by artist H. Khan at the bottom, approximate picture sizes 163x237mm, fresh, VF and rare, actual issued stamp is placed at the bottom of each piece (Image)

NICE AND VALUABLE COLLECTION IN TWO LARGE STOCKBOOKS: 1951-98, well over 4000 mint never hinged perforated and imperforated stamps and souvenir sheets, representing postage, semi-postal, air post, official, military and Vietcong issues, including most of early material and practically all valuable items, nice topical sets throughout, apparently flawless quality unit, full OG or no gum as issued, NH, F/VF or better, C.v. is about $8,000 (Image)