I bought this set of stamps in Singapore.
It is a 2024 joint issue of stamps from ten ASEAN* countries. (Different stamps for each country but issued on the same day).
*Not, not Asian— ASEAN: the Association of Southeast Asian Nations.
It is a regional intergovernmental organization established on August 8, 1967, to promote economic growth, social progress, cultural development, and regional peace. It comprises 11 member countries—Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, Philippines, Singapore, Thailand, Vietnam, and Timor-Leste.
The theme for the joint issue is not super-exciting: general post office buildings.
Some of the stamps have cool security features, though.
And I was reminded where in the world the Brunei is.
From Google: Brunei is a tiny nation on the island of Borneo, in 2 distinct sections surrounded by Malaysia and the South China Sea. It’s known for its beaches and biodiverse rainforest, much of it protected within reserves. The capital, Bandar Seri Begawan, is home to the opulent Jame’Asr Hassanil Bolkiah mosque and its 29 golden domes. The capital’s massive Istana Nurul Iman palace is the residence of Brunei’s ruling sultan.
The SPM lettering is an abbreviation for Security Printer of Malaysia. The SPM watermark has been applied a long time on stamps from Malaysia, and is found on stamps as early as 1986.