The incident happened at around 11.00pm on Sunday February 12 when five masked men, one armed with a hammer and another with a wheel brace, entered the Bells of St Mary's pub in Mostyn Road in Gronant and threatened staff.
No one was assaulted during the robbery and the offenders made off with a substantial amount of cash.
Anyone with information to call DI Alun Oldfield on 101.
Alternatively call Crimestoppers, anonymously, on 0800 555 111.
