_USNM 604124-M (S-K 280). Figure 236._
[Illustration: FIGURE 236]
While cast-brass plates of this type were first made in the early
1850's, their use continued for 20 years or more after that decade.
The principal device on this specimen is taken from the arms of the
Commonwealth of Massachusetts. The form of the plate is identical to
the pattern of the eagle-wreath plate adopted by the Regulars in 1851.