The man is described as white, 6ft tall, in his late 20s, and of medium build, with short, styled hair and stubble.
He was also wearing grey trousers when he caused the damage at the Coach and Horses on Priestpopple at 8.30pm on November 15.
Anyone with information is asked to contact officers in Hexham on 101, ext 69191, quoting crime number 102315/11/15.
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