Proof notes from the collection of Nguyễn Đức Toàn (Hanoi)Sunday-morning gathering of the Saigon Stamp & Currency Club at the Ho Chi Minh City Museum of Fine Arts, 97A Phó Đức Chính Street, District 1, TP.HCMWeekly Sunday meeting of the Biên Hòa Currency Collectors GroupThe art of arranging coins by Nguyễn Văn Thành (Hanoi)