Issued by the Republic of Vietnam (Việt-Nam Cộng-Hòa) in 1957, this commemorative set marks the 9th Colombo Plan Conference held in Saigon. The design symbolically depicts a cargo crate bearing the Colombo Plan emblem, lifted by crane above a harbor scene with sailing vessels and industrial silhouettes—an allegory of post-war reconstruction, regional cooperation, and economic development in Southeast Asia. Printed in three distinct colorways and denominations (0đ20, 0đ40, 2đ), this set reflects early South Vietnamese nation-building efforts and its alignment with international development initiatives. A desirable Cold War–era Asian conference issue, sought after by collectors of Vietnam, international organizations, and economic history themes.

Set Details (as shown):

• Issue Year: 1957

• Country: Republic of Vietnam (South Vietnam)

• Theme: Colombo Plan / International Economic Cooperation

• Event: 9th Colombo Plan Conference, Saigon

• Denominations: 0đ20, 0đ40, 2đ

• Type: Commemorative postage stamps

• Design Motif: Development aid crate, harbor & industry symbolism