No Littering Sign

How many variants of No Littering signs are there in Singapore? Many I guess...but this one stands out from the rest;



The above photo taken on 22 Sep 2007.

What's so special about the above sign? Well the sign shows the person littering over his/her shoulder! The above poster is from Kampong Glam Beach Road Residents' Committtee.

See some of the common No Littering signs;