Wow, all those postmarks!
They needed to get every stamp :)
The stamps match well with the collage on the envelope!And such a funny stamp: I've never seen a bank note stamp like this before :-)
And it is a very small stamp, too.
That stamp belongs to a series about decades. Each decade is represented by 4 stamps (the theme has been voted by the subscribers to the philatelic service). I've think I have sent some of them to you both (and the postcards, to Heleen).Here you have the links (click on the images of the sheet to enlarge):- The 1990s.- The 1980s.- The 1970s.. The 1960s.- The 1950s.