Envelope for first day of issue for stamp featuring Negros Oriental TB Pavilion, Dumaguete City, in the Philippines. Envelope has graphic printed in yellow and green reading, "First day of issue, Anti-TB Semi-Postal, Unang Araw Ng Labas." Features illustration of the Philippines with overlay of double-barred cross. Canceled in Manila, August 19, 1964. Envelope has not been used.
