Coburg is not being relocated. They gave up on that idea 2 years ago.
Ruhpolding was similar and in with loads of low cloud and fog around in winter. Sadly it is gone.
That would be CAVOK I guess. There are a few airfields like this, my favorite is Coburg EDQC which has RNAV procedures. It has seen a few bad accidents and is currently being relocated into the valley which will make it less usable due to frequent low stratus.
I came across this amazing picture of Farrenberg airfield in Germany.
http://chadburn.org/wp-content/uploads/2011/12/Farrenberg-airfield-Germany.jpg
OK it does not have an ICAO code and METAR but was wondering how would a METAR display and overcast BELOW airport level ?
[edited to add pic here, in case original disappears – Peter]