The spirit of honourable rivalry impelled me to attempt some other masterpiece, which should equal, or even surpass, the productions of that able craftsman, Lucagnolo, whom I have mentioned. Still I did not on this account neglect my own fine art of jewellery; and so both the one and the other wrought me much profit and more credit, and in both of them I continued to produce things of marked originality. There was at that time in Rome a very able artist of Perugia named Lautizio, who worked only in one department, where he was sole and unrivalled throughout the world. [4] You must know that at Rome every cardinal has a seal, upon which his title is engraved, and these seals are made just as large as a child’s hand of about twelve years of age; and, as I have already said, the cardinal’s title is engraved upon the seal together with a great many ornamental figures. A well-made article of the kind fetches a hundred, or more than a hundred crowns. This excellent workman, like Lucagnolo, roused in me some honest rivalry, although the art he practised is far remote from the other branches of gold-smithery, and consequently Lautizio was not skilled in making anything but seals. I gave my mind to acquiring his craft also, although I found it very difficult; and, unrepelled by the trouble which it gave me, I went on zealously upon the path of profit and improvement. There was in Rome another most excellent craftsman of ability, who was a Milanese named Messer Caradosso. [5] He dealt in nothing but little chiselled medals, made of plates of metal, and such-like things. I have seen of his some paxes in half relief, and some Christs a palm in length wrought of the thinnest golden plates, so exquisitely done that I esteemed him the greatest master in that kind I had ever seen, and envied him more than all the rest together. There were also other masters who worked at medals carved in steel, which may be called the models and true guides for those who aim at striking coins in the most perfect style. All these divers arts I set myself with unflagging industry to learn.