A.2.: INDOCHINA is the exception among the possesions in having postage spanning all four periods of the various Vichy usages
With no access to Europe, stocks of Third Republic issues were used.
Mailed on February 13, 1941 from Saigon to Brooklyn, New York.
The Saigon Central cancellation uses the Cochin China designation from the early days of French colonial rule.
Vichy France acceded in September 1940 to Japanese demands to take over all military bases. Basically stripping the French forces of any heavy weaponry, the Japanese decided to let Vichy French administrators run French Indochina, with heavy oversight by the Japanese. This extended to the postal administration. This mode of governmental operation lasted into March 1945