Singapore 1999 Amphibians and Reptiles

First day cover signed by stamp designer Leo Teck Chong.

Singapore 1995 30th Anniversary of the Independence

First day cover signed by stamp designer Leo Teck Chong.

Singapore 1993 Sport Series - XVII SEA Games 93

First day cover signed by stamp designer Leo Teck Chong.

Singapore 1993 Art Series-Chen Wen Hsi

First day cover signed by stamp designer Leo Teck Chong.

Singapore 1992 Sport Series - Games of the XXVth Olympiad

First day cover signed by stamp designer Leo Teck Chong.

Singapore 1991 History of Civil Aviation

First day cover signed by stamp designer Leo Teck Chong.

Singapore 1991 National Monuments Series

First day cover signed by stamp designer Leo Teck Chong.

Singapore 1994 Bird Series - Herons

First day cover here signed by the stamp designer, Eng Siak Loy.

Singapore 1993 Bird Series - Migratory Birds (Chinese Egrets)

First day covers signed by the stamp designer, Eng Siak Loy.
WWF first day covers & maximum cards signed Eng Siak Loy.

Singapore 1993 Nature Series - Butterflies

First day cover here signed by the stamp designer, Eng Siak Loy.

Singapore 1993 Animal Series

First day cover here signed by the stamp designer, Eng Siak Loy.

Singapore 1991 Philanippon-Singapore Flora

Miniature sheet first day cover & maximum cards (with Japan postmark "B31") here signed by the stamp designer, Eng Siak Loy.