Anglo-Indian portrait miniature of a gentleman

Portrait miniature of a gentleman, the carved ivory border with scalloped and moulded edge surrounds a portrait bust, carved in ivory in deep relief, showing profile to the right of a gentleman wearing a broad collared coat, cravat and waistcoat. His wig with braided pigtail and ribbon bow being the fashion in the Georgian period.  Rosewood framed.
Anglo Indian, circa 1750 - 1800
This object incorporates old ivory and has been registered with Defra