This is an EXCEPTIONALLY RARE Sarawak OHMS, or ON HIS/HER MAJESTY'S SERVICE Cover.  It was sent locally from Serian to Kuching, Sarawak.

This guy has a couple things that make it really special.  First is the BORDERED BOX SERIAN OFFICAL POST PAID in RED.  It is also Circle endorsed in VIOLET, and signed!  These are RARE local markings!

This item is over $100 USD so I will ship it using Priority Mail in the US, and Registered Mail overseas.  This is to ensure that it reaches you in a safe and timely manner, and includes tracking!