This Sarawak stamp was issued from a small post office established in 1893 to serve the coal-mining community at Rajah Charles Brooke's Brooketon colliery.
Operated by the Sarawak government, the post office provided a monthly postal service to and from Kuching.
Malaysian High Commissioner Ali Abdullah attended the ceremony, which was conducted by Deputy Minister of Communications Yusoff Abdul Hamid at the capital's General Post Office.
Post offices have expanded their roles, allowing the community to handle tasks such as renewing driver's licenses and road tax and paying water, phone, and energy bills in one convenient location.
As of 2008, Brunei has 24 post offices across the country, comprising three in Tutong, five in Belait, one in Temburong, and 15 in the Brunei-Muara district.