Russian pianist and composer (1829–1894) acclaimed as one of the foremost keyboard artists of all time. ALS in German, signed “Art. Rubenstein,” one page, 5.5 x 7.75, April 27, 1872. Letter to “Mr. Director.” In full (translated): “Would you be so kind as to hold a private box for this evening for me—my wife would like to see the opera once more and I wish to be able to hear everything from inside the hall, because it is not really possible to get a correct total impression from behind the wings.” Double matted and framed with a portrait of the composer bearing a printed signature, to an overall size of 15.5 x 13.5. Central horizontal and vertical fold, one through a single letter of signature, and some scattered light toning and creasing, otherwise fine condition. RR Auction COA.