- Crabs/Seashells/Corals MS & Stamps St. Kitts WWF Stamps 1995 – Green Turtles 1 year ago ken yong SGD5.00
- Animals MS & Stamps British Virgin Islands WWF Stamps 1994 – Anegada Ground Iguana 1 year ago ken yong SGD5.00
- Birds MS & Stamps British Virgin Islands WWF Stamps 1988 – Brown Pelican 1 year ago ken yong NOTE: Mounted mint SGD4.50
- Animals MS & Stamps Congo WWF Stamps (joint) 1996 – Animals On The Verge Of Extinction 1 year ago ken yong SGD4.00
- Animals MS & Stamps Cyprus WWF Stamps (blocks) 2003 – Mediterranean Horseshoe Bats 1 year ago ken yong SGD4.00
- Singapore FDC Singapore Souvenir MS FDC 1997 – San Francisco & California • Ox 1 year ago ken yong SGD4.00
- Singapore FDC Singapore FDC 1994 – Corals & Reef Life Definitives • No-Value Indicator 1 year ago ken yong SGD2.00
- Singapore FDC Singapore FDC 1994 – Corals & Reef Life Definitives • High Values 1 year ago ken yong SGD10.00
- Singapore FDC Singapore WWF FDC 1993 – Migratory Birds • Chinese Egrets 1 year ago ken yong SGD3.50
- Crabs/Seashells/Corals MS & Stamps Cocos (Keeling Islands) WWF Stamps 2000 – Crabs 1 year ago ken yong SGD4.50
- Crabs/Seashells/Corals MS & Stamps British Virgin Islands Stamps 1974 – Seashells 1 year ago ken yong SGD4.00
