Postcard sent by Heleen (the Netherlands). It is a work from a favourite painter: Edward Hopper: The Long Leg.
When I saw the postcard I realised that there is also an american stamp of this painting. I received it long time ago. The colours look very different, but maybe it is due to my picture/scanning:
And I was happy to have the right postcard to write my answer on: Lighthouse Hill. By Hopper, of course!