Study of cap plates and other insignia in the Huddy and Duval prints in _U.S. Military Magazine_ points to the years between 1833 and perhaps 1837 or 1838 as the transition period from single to composite ornaments, years during which there was also tremendous growth in the popularity and number of independent Militia units. In contrast to the 1820's when the Militia often waited until the Regulars discarded a device before adopting it, in 1840 there were no less than five organizations, mounted and dismounted, wearing the 1833 dragoon plate in full form while it was still in use by the Regulars. _U.S. Military Magazine_ illustrates such plates for the Richmond Light Infantry Blues, the Georgia Hussars, the Macon Volunteers, the Jackson Rifle Corps of Lancaster, Pa., the Montgomery Light Guard, and the Harrison Guards of Allentown, Pa. The plate of the Harrison Guards is an example of the license sometimes practiced by Huddy and Duval in the preparation of their military prints. The color bearer in this print is depicted wearing a full sunburst plate, while the description of the uniform called for "a semi-circular plate or _gloria_."[104] [Footnote 104: _U.S. Military Magazine_ (March 1839), p. 4.] In the following descriptions of plates, the term "stock pattern" is used because the insignia are known to have been worn by more than one organization, because their basic designs are so elementary that it appears obvious that they were made for wide distribution, or because they are known to have been made both in silver and in gilt metals. CAP PLATE, ARTILLERY, C. 1825 _USNM 60307-M (S-K 64). Figure 107._ [Illustration: FIGURE 107] On the raised center of this shield-shaped plate is the eagle-on-cannon device within an oval floral border; the Federal shield is below. The whole is superimposed on a trophy of arms and colors with portions of a modified sunburst appearing on the sides. The plate is struck in brass. The eagle-on-cannon first appeared on Regular artillery buttons in 1802. About 1808 it was used as an embossed device on the leather fan cockade, and in 1814 it became the principal design element of the cap plate for Regulars. This plate is thought to be one of the earliest of the post-1821 series of Militia cap plates incorporating the discarded design of the Regular artillery. UNIDENTIFIED ORNAMENT, PROBABLY CAP PLATE, C. 1821 _USNM 60331-M (S-K 87). Figure 108._ [Illustration: FIGURE 108] This silver-on-copper plate is unique in size, shape, and over-all design. It is one of the most unusual Militia insignia in the national collections. The standing eagle of the 1807 mint design with Federal shield, the panoply of arms and colors, and the rayed background all suggest that this plate was made not later than the early 1820's. Quite possibly it is a cap plate of the War of 1812 period, but positive dating is impossible. Three simple wire fasteners are affixed to the reverse. CAP PLATE, ARTILLERY, C. 1825