Gone missing

Rather a different day from yesterday... not more than 5 minutes of sunshine all day... very miserable but l am hanging on to the hope our mid week summer is still on its way!
We finished this jigsaw a few weeks ago and had left it out to enjoy looking at it... today we realised a piece had gone missing.. we have searched everywhere but cannot find it.  l took this picture to remind me what it looks like so that we can put it into the box if it reappears.. in the meantime a note saying one piece missing is in the box with the rest of the puzzle.. what a shame..