Sent by Heleen (the Netherlands).
Illustration by Fiep Westendorp (1916-2004), one of my favourite artists. (By the way: you can see here the postcards of Fiep that I've got).
I like this kind of postcards : postcards with people buying postcards. It's a genre in itself! It reminder me this other card I've recently sent from Liverpool to my friend Chi Ho, who lives in Taiwan: