From 1972, a PHQ stamp card showing a policeman talking to children. It looks dated now, partly because of the art work I think, but also because policemen haven't worn that style of uniform since 1994. Although they do still wear the helmet, they almost always wear a stab proof vest over a shirt. A sign of the times.
A stamp card issued for the Millenium celebrations. It illustrates children playing in a green open space. A number of these open spaces were created as Millenium Greens.
Some stamps from other countries:
Russian Post issued a series of stamps showing contemporary art. This one was issued in 2013 and shows the picture "Girl and City" by Anatoly Lubavin which was completed in 2005.
From Germany, part of a series of special children's stamps called "Für uns Kinder" published each year since 1993. This one was issued in 2010.
This is a post for Sunday Stamps, now hosted by Violet Sky at "See it on a Postcard!"