Another lovely official Postcrossing postcard is coming your way today!
The stamp used on the postcard was issued in 2011 by Nederland Postal services as a part of Environment Series. The phrase written on the stamp, inside a green tree seems to say "denk groen voor een groene wereld" or something like that. Google Search suggests that it is a Dutch phrase for "Think Green for a Green World".
I hope a native Dutch reader could improve our exploration.
I wonder what good are these flying/ Smoking aircrafts doing to make the World greener. The stamps and the postcard seem to be an interesting combination.
What do you say?