O) 1989 VIETNAM, ERROR, PROOF, PHILEXFRANCE 1989, LIBERTY LEADING THE PEOPLE BY DELACROIX, MNH
O) 2014 VIETNAM, LIGHTHOUSE, MONKEYS, CIRCULATED TO BRAZIL, XF
O) 2016 VIETNAM, IMPERFORATED, WILLIAM SHAKESPEARE, PLAYWRIGHT, ENGLISH POET ACTOR, CELEBRATE OF UNIVERSAL LITERATURE, MNH
O) 2020 VIETNAM, LUDWIG VAN BEETHOVEN, MUSICAL INSTRUMENT, PIANIST, COMPOSER, CLASSICISM AND ROMANTICISM, MNH
O) 2020 VIETNAM, GASTRONOMY, FOOD, COMPLETE SET MNH
O) 2021 VIETNAM, IMPERFORATED, MEDICINE, PANDEMIC 2020, COVID 19, CORONAVIRUS, RESPIRATORY INFECTION DISEASE, VACCINE - TREATMENT, MNH
O) 2021 VIETNAM, MEDICINE, PANDEMIC 2020, COVID 19, CORONAVIRUS, RESPIRATORY INFECTION DISEASE, MNH
O) 2022 VIETNAM, FOODS, TRADITIONAL VIETNAMESE GASTRONOMY, MAXIMUM CARD XF
O) 2022 VIETNAM, FOODS, TRADITIONAL VIETNAMESE GASTRONOMY, MAXIMUM CARD XF
O) 2022 VIETNAM, IMPERFORATED, SAINT JOSEPH CATHEDRAL - HERITAGE, -HOAN KIEM OF HANOI, NEOGOTHIC ARCHITECTURE - CATHOLIC RELIGION, MNH
O) 2022 VIETNAM, IMPERFORATED, WATERFALLS, LANDSCAPE, MNH
O) 2023 VIETNAM, IMPERFORATED, JACARANDA MIMOSIFOLIA, FLOWERS -MEDICINAL, ANTISEPTIC, ANTITUMORAL AND SPASMOLITICAL PLANT, MNH
O) 2023 VIETNAM, CABLE CARS, MEANS OF TRANSPORTATION, HALONG BAY, LANDSCAPE, MNH