JAPAN, 1976. Kekkakau Yobo Kai TB Envelope 149.en, Mint
JAPAN, 1976. Kekkakau Yobo Kai TB Envelope 149. Japan, 1975. Kekkakau Yobo Kai, Anti- TB Association Envelope Green 149. Envelope with colorless embossing of stamp design in lower left corner, Thistle.