It's been there for a few weeks and is a piece by local artist REM. You might be interested to know that on Fridays REM leaves a sample of his work (e.g. last week it was a canvas) somewhere in Dawlish for someone to find and keep.
I thought the artist was NME has a FB Page https://www.facebook.com/pages/Nme/125181450932741?fref=ts