Collection of mounted mint specimen or unused postage stamps issued by the Vietnam Democratic Republic submitted to the Universal Postal Union (UPU) for dissemination among other member states for reference purposes.
Stamps manufactured using various printing techniques designed by M. Kimura, H. Otsuka, S. Suzuki, T. Nakano, K. Fuya, H. Ando, K. Mori and T. Kasori. Engraved by M. Matsuura, K. Kato, F. Watabe and K. Noma.