The history of these arms is fully set forth in Jewitt and Hope's _Corporation Plate_, and there illustrated with figures of the old common seal of London, and the first and second mayoralty seals. The facts as there set forth are shortly stated here. The old common seal is a fine example of the early part of the thirteenth century. Stow in his _Survey_ dates it in 1224, and Gregory in his _Chronicle_ in 1227-1228. Mr. Hope says that the seal may well be of a date _circa_ 1225, and that it certainly was in use in 1246. The obverse of the seal represents a figure of St. Paul, with a sword in his outstretched right hand, and a banner of England in his left hand. 'The saint is represented as standing in the middle of the city over which he keeps guard; the spire of the cathedral church rises in front of him, and other steeples on each side.... In front of all is the city wall with its ditch, with lofty central gateway and two lesser flanking towers or bastions.' The legend is: SIGILLUM BARONUM LONDONIARUM. The first mayoralty seal bears the seated figures of St. Thomas of Canterbury and St. Paul with his sword. The legend is _Sigillum Maioratus London._ and the date _circa_ 1280. The second mayoralty seal, which was produced a century after the first one, is of very special interest. It bears seated figures of St. Thomas and St. Paul, and in base a shield of the city supported by two lions. The legend is _Sigil: Maioratus: Civitatis: London_. The record of the making of this seal in 1381 is found in Letter Book K, f. cxxxijb., and Mr. Hope's remarks on the value of this piece of evidence must be quoted entire: 'This seal is of special interest, not only from its being a dated example, but because it proves beyond doubt the absurdity of the silly notion that the object in the dexter chief of the city arms is the sword or dagger wherewith Sir William Walworth slew Wat Tyler, instead of being, as it undoubtedly is, the sword of St. Paul. Wat Tyler was killed on June 15, 1381, whereas the new seal of the mayoralty had been formally adopted on April 17, two months before. This seal is also one of the earliest authorities for the city arms. Its silver matrix is still preserved at the Mansion House, but in so worn a condition that little else than the deepest parts can be traced. It is only now used for mercantile documents going abroad.'[266] To return to the common seal, it may be noticed here that the original reverse had 'in base a view of the city somewhat resembling that on the obverse, surmounted by a segmental arch. On the top of the arch, seated on a throne or chair of state, is a figure of St. Thomas of Canterbury with cross and pall.'