A green sign with a diagram showing a crossroads and the following text.
Forward destinations: Berwick A1.
Left turn destinations: Coldingham; St Abbs; B6438.
Right turn destinations: Reston; B6438; [Railway station symbol] Station Duns (A6112).
This is a rare occasion where a Scottish sign designer forgot themselves and didn't include the words "upon Tweed". England only ever uses the short version of Berwick's name, but up here the full three-word version is de rigeur.