(commemorative cover)
| No. | Date | Cover | Title |
|---|---|---|---|
| 1 | 9 Jan 1998 | |
Zodiac Series - Tiger |
| 2 | 22 Apr 1998 | |
Dinosaurs |
| 3 | 6 May 1998 | |
Songbirds |
| 4 | 20 May 1998 | |
Hello |
| 5 | 5 Jun 1998 | |
Fragile Forest |
| 6 | 7 Jul 1998 | |
The Singapore Story |
| 7 | 6 Aug 1998 | |
Singapore - Australia Joint Issue |
|
Singapore - Australia Joint Issue (commemorative cover) |
||
| 8 | 9 Sep 1998 | |
Flowers |
|
Flowers (Care-for-Nature) | ||
| 9 | 7 Oct 1998 | |
Festivals |
| 10 | 4 Nov 1998 | |
Historical Buildings |