A mid 18th century Irish silver salver

A mid 18th century Irish silver salver, Dublin, maker's mark worn and apparently no date letter, circular form, shell and gadroon border, the centre with chased foliate scroll decoration and butterflies, the centre engraved with an armorial, on four bracket feet, diameter 43.5cm, approx. weight 70oz. The arms are those of Colt quartering Conway impaling Fitzmaurice.