Obv: Bust to left, CHARLOTTA DEI GRATIA around. Rev: In a shield HER PEOPLES FRIEND, a crown above, BRITAINS HONOR around. Edge: Milled
An imitation guinea, listed as 9694 in 'A Thousand Guineas Plus' by W.B. Neilson and M.R. Warburton. There are four die varieties of this particular token.