Malaysia - Perak - Dinding

In the Pangkor Treaty signed in 1874, the Sultan of Perak ceded Dinding (include Pangkor Island, Sitiwan, Lumut) to the British. Dinding joined the Straits Settlements until it was returned to Perak at a later date. I visited the post offices of Lumut, Sitiawan and Pangkor Island to get these three postal cancellations.