Pursat Province
The post office in the provincial centre of Pursat Province, below, in Central Cambodia, together with its modern-day postmark:

The sign for Pursat provincial post office, below:

Krakor District, Pursat Province
The post office in the District of Krakor in Pursat Province, below:

and its sign:

Related Sites:
Tourism of Cambodia Travel Guide to Pursat: http://www.tourismcambodia.org/provincial_guide/index.php?view=detail&prv=18
and also: http://www.tourismcambodia.com/travelguides/provinces/pursat/