An 18th century presentation snuff box

An 18th century presentation snuff box, possibly marked with a maker's mark TB crowned, oval form, the hinged cover with a chased scene of a figure in a landscape, the base engraved with the Fitzpatrick armorial and inscribed 'The Honourable General Richard Fitzpatrick, M.P, For The Borough of Tavistock, My Dear General, being deputed by your Constituents to transmit you the accompanying address it affords me much pleasure to not only convey their grateful sentiments but to inclose it in this box, bearing your miniature and coat of arms so long in the possession of our mutual and lamented friend and whose lestamen (?) to my desire was it should be given to some member of Lord ? Ossory's Family which I now do by presenting it to that Nobleman's Brother and heir presumptive, with the greatest esteem always yours my dear general, Bedford, Woburn Abbey 1789', the side inscribed 'The Gift of my valued Friend The Hon. Col Fitzpatrick, who's arms I had engraved thereon and whose likeness affixed therein. P', the interior inscribed ' made in Canton', purchased in Madras, presented in Dublin, engraven in London', the interior with a portrait miniature, length 7.3cm.