| Added by |
 Aidan Work
|
| General Description | Penang 1991 20 Ringgit postal order. 18th. of July 1991. Poundage - 25 Sen. Issued at Bandar Bayan Baru (Penang). Cashed in Kuala Lumpur on the 13th. of August 1991. |
| Front Description | 'POS' logo at top left. Handstamps at bottom. |
| Back Description | Regulations in Bahasa Melayu at top. An uncancelled Penang 30 Sen stamp at bottom. |
| Catalog prices | No catalog prices set yet |
