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Vietnam War MPC
Series 641 (31 Aug 1965 – 21 Oct 1968)

Although actual greenbacks were not circulating, many local merchants accepted MPC on par with
US dollars, since they could use them on the black market. This was especially evident during the
Vietnam War when the MPC program was at its zenith. To prevent MPC from being used as a
primary currency in Sth Vietnam and destroying the local currency value and economy, MPC
banknote styles were frequently changed to deter black marketers and reduce hoarding, as the
old style would become worthless. Many veterans can recount a conversion day or C-Day.
C-days in Vietnam were always classified, never pre-announced. On C-day, soldiers would be
restricted to base, preventing GIs from helping Vietnamese civilians—especially local bars,
brothels, bar girls and other black market people—from converting old MPC to the newer version.
Since Vietnamese were not allowed to convert the currency, they frequently lost savings by
holding old, worthless MPC.
South Vietnam Dong (otherwise known as Pi or Piastre)
1, 5, 10, 20, 50, 100, 200, 500, and 1000
24,900 Dong is worth US$1.00
US Dollar or Greenback as we knew it. Of course there were larger notes
but these were the ones we saw mostly.
In Sth Vietnam we became familiar with three currencies. MPC or Military Payment Certificates
were what we were paid. This was the currency we used in base. Same value as US dollar. If we
went into Vung Tau on local leave we were supposed to use "Pi" (Piastre or the local currency)
which we collected at Coy HQ. Of course when you went out of country on leave you took US