Cast brass. Note single dot on
back of belt loops. With its smooth casting and finely shaped letters,
this was the most attractive of the 1839 pattern artillery plates. It
was a common style with a matching series of one, tow or three dots
punched in the belt loops as assembly numbers. The same unidentified
contractor supplied artillery plates displaying letters “SNY”. After
regular artillerymen switched to the 1851 eagle-wreath plate.