The suit A164 (plate 35) has been immortalised by Titian, in whose picture (No. 457) in the Prado Gallery, Charles is shown wearing it. The armourer’s mark proves that it was made in 1544--three years before the Battle of Mühlberg, where it was worn by the Emperor. This, thinks the Conde de Valencia, must have been the last suit worn by him in the field. “The four complete cuirasses, and the extra backplates comprised in it ... show that the Emperor was then a victim of frequent attacks of gout, and replaced uncomfortable cuirasses by such as were easier.” The first figure (A164) has been armed in accordance with Titian’s portrait. It is composed of breast and backplates, with taces; tassets; laminated gorget; espaliers reaching to elbows over sleeves of steel mail; and strong gauntlets with fingers united two and two. “These pieces, combined with the triple-crest morion, the javelin, and pistolet K51, fastened to the front bow of the saddle, form the armour called _herreruelos_, which appeared for the first time in that war, as related by Nuñez de Alba in his _Dialogos del soldado_, who, being a soldier himself, was in the 1547 campaign against the Schmalkalden Protestant League.” The figure A165 (plate 40) is fitted with pieces of the same suit, after the portrait attributed to Pantoja de la Cruz in the Escorial Library. It consists of: armet with visor in two pieces, and a grating over the beavor; laminated gorget; cuirass with taces; lance-rest; the usual arm armour; tassets; cuisses, and demi-jambs. The decoration of the whole Mühlberg harness is simple and tasteful. It is composed of broad lengths of the metal in its native colour, inlaid with gold, scalloped or festooned on each side in low relief, and beautifully etched with figures, foliations, &c., down the middle. This ornamentation appears on all the pieces, the armet included. The princes and commanders of the sixteenth and seventeenth centuries had a fondness for appearing in Roman garb, which, they fancied, lent dignity to their carriage. Charles V. was the possessor of a suit of Roman armour (A188), the work of Bartolommeo Campi, of Pesaro, and, in the opinion of the Conde de Valencia, the offering of Guidobaldo II., Duke of Urbino. That prince’s monogram, the Conde points out, is to be seen on the backplate gilded in relief. The date of the armour is 1546. We extract the following notes from the Catalogue: “A. Angelucci, in his work _Documenti inediti per la storia delle armi da fuoco italiane_, Turin, 1869, p. 330, publishes a brief extract from the biography of Campi, written by Promis, which we can amplify, thanks to the documents which, by the kindness of the Dukes of Alba, we have been able to consult in their important historical Archives.