Partly-printed DS, signed “Victoria R,” one page, 20.5 x 13.25, March 13, 1875. The Queen, “with a view to conclude a Postal Convention between Us and our good brother the Emperor of Brazil,” appoints “Victor Arthur Wellington Drummond Esquire, Our Acting Charge d’Affaires at Rio de Janeiro…and appoint him Our undoubted Commissioner Procurator.” Signed along the top by Victoria. In fine condition, with intersecting folds, one through a single letter of signature, and a bit of scattered light foxing around signature. Document retains its original red and silver braided chord. Drummond held several notable posts throughout his life, including Secretary of the Embassy in Vienna; Minister Resident to Kings of Bavaria and Wurttemberg; and Secretary to British Legation in Washington, DC. PSA/DNA and RR Auction COA.