Prerestoration photograph of Andrei Rublev’s Old Testament Trinity with its oklad, or revetment, dating from the reign of Boris Godunov (1551-1601), 1904. From V.P. Gurianov, Dve mestnye ikony Sv. Troitsy v Troitskom sobore Sviato-Troitsko-Sergievoi lavry i ikh restavratsiia (Moscow: Pechatnia A.I. Snegirevoi, 1906).