Stamps manufactured using various printing processes designed by M. Hioki, Y. Yoshida, T. Yamanouchi, S. Watanabe, T. Kasori and M. Hisano. Engraved by F. Watabe, S. Kurihara, K. Kato, Y. Kawahara, K. Oshikiri, M. Matsuura and H. Hasegawa.
Stamps manufactured using various printing processes designed by M. Hioki, Y. Yoshida, T. Yamanouchi, S. Watanabe, T. Kasori and M. Hisano. Engraved by F. Watabe, S. Kurihara, K. Kato, Y. Kawahara, K. Oshikiri, M. Matsuura and H. Hasegawa.
Collection of mounted mint specimen or unused postage stamps issued by the Socialist Republic of Vietnam submitted to the Universal Postal Union (UPU) for dissemination among other member states for reference purposes.