<prompt> Bheka isigaba esingezansi bese uphendula umbuzo emva kwalokho ngolimi olufanayo nesigaba: I-Passage: Izinhlamvu zemali ezibizwa ngama-piastres nama-dong zakhishwa ngo-1953 zezwe laseVietnam, elaba yiNingizimu Vietnam ngo-1954. Ngo - September 22, 1975, ngemva kokuwa kweSaigon, imali yaseNingizimu Vietnam yaguqulwa yaba i - liberation đồng ebiza ama - đồng aseNingizimu angu - 500. Umbuzo: Yayikhishwa ngamuphi unyaka i-dong?  <response>: Ngo-1953 