Federal Vignettes. Essay Vignette of Mechanics for Federal Currency. Very Fine.An unusual vignette of the Mechanic, but reverse image to that used at the lower left of the back design of the $50 Third Charter National Bank Notes. Larger size image, no counter. India paper die sunk to wide card. Appears to be unpublished. Penciled die number on the back and dated in pencil 1915. An interesting piece and a fresh impression.