Oval shoulder-belt plates were worn by American officers during the War of the Revolution, but no extant specimens are known. Highly ornamented or engraved officers' plates for the period after 1790 are in several collections (fig. 53) and others are illustrated in contemporary portraits (fig. 54). Just what year shoulder-belt plates were issued to enlisted personnel is unknown, but their use appears to have been well established by 1812. The uniform regulations for that year specified swords for sergeants of infantry to be "worn with a white cross belt 3-1/2 inches wide," but nothing was said about a device on the belt.[84] [Footnote 84: General Order, Southern Department U.S. Army, January 24, 1813 (photostatic copy in files of division of military history, Smithsonian Institution).] [Illustration: FIGURE 53.--Specimen in Campbell collection.] Normally, brass or "yellow metal" plates were authorized for the artillery and silvered or "white metal" for the infantry and dragoons, as consonant with the rest of their trimmings. In actuality, however, white-metal shoulder-belt plates do not seem to have been issued to the infantry prior to 1814, and brass ones were still being issued in 1815.[85] Most of these plates were plain oval, although a few are known that were struck with devices similar to those on cap plates; and at least one rectangular cap plate, fitted with the two studs and hook on the reverse normal to shoulder-belt plates, has been found. It seems probable that these were officers' plates. Oval brass plates have been found that are identical in size and construction to the plain ones but with the letters "U.S." embossed on them; however, these are difficult to date. [Footnote 85: Letters from Irvine in Records AGO: To Colonel Bogardus (Commanding Officer, 41st Infantry), February 16, 1814; to James Calhoun, January 14, 1815; and to General Scott, January 31, 1815.] [Illustration: FIGURE 54.--Portrait in collection of The Filson Club, Louisville, Kentucky.] It is extremely doubtful that waist-belt plates were issued to enlisted personnel of foot units during this period. In 1808 enlisted dragoons were authorized a waist-belt plate of tinned brass and, as far as known, perfectly plain.[86] [Footnote 86: Letter to the Purveyor of Public Supplies in 1808.]