This 1862 $1 note issued by the Confederate States of America bears many standard vignettes used on notes of this period. The close-up image showing the maiden with shield vignette (located in the upper left corner of the note) shows a sun face on the shield similar to the coats of arms of two South American nations, at least in the eyes of the author.
But why would Duncan or some other official pick a vignette incorporating the coat of arms of some South American country? The answer is probably that the vignette was a stock cut that happened to be available and was deemed attractive enough to make do.
The objective was, after all, to get these notes into circulation as quickly as possible. So, even if this were an unusual selection, not many would have had any idea about the South American connection and fewer still would care about it, even if they did know.
But, you know collectors; we like to delve into the minutia and wonder, “Why would they do that?”
Often times the simple answer is:
“Because they could!”