Each elegant cabinet has raised moulded panels and a hinged front enclosing an arrangement of drawers inlaid with ivory letters of the alphabet.
Each is set on downswept chamfered legs upon a rose and ribbon carved moulded plinth, 109cm by 46cm, 38cm depth.
The drawers contain intaglios typical of Grand Tour souvenirs; medallions of plaster mouldings of Renaissance and earlier (and sometimes later) coins, seals and medals, as well as cameos.
These medallions, known as sulphurs, were produced in various places in Italy and were complete with manuscript inventories of their subject-matter.
The pictured drawer, which contains intaglios of Egyptian history and Roman gods and goddesses, appeared in The Travelling Earls Treasury Exhibitions of 2009 and 2018.
The London firm of John Mayhew and William Ince were the principal suppliers of fine furniture to Brownlow, 9th Earl of Exeter (1725-1793).