ASEAN 2024, Thailand

From Bankgkok. It's current 2567 on the Thai solar calendar, hence the "67" year in the postmark. The stamps, which show an image of the Bangkok general post office, commemorate the 2024 ASEAN summit to be held in Laos in October. This is a joint stamp issue with other ASEAN members issuing similar stamps with images of post offices. ASEAN is the Association of Southeast Asian Nations which includes Indonesia, Malaysia, the Philippines, Singapore, Thailand, Brunei, Vietnam, Laos, Myanmar and Cambodia.