The Secret Mark on the 3¢ Washington Bank Notes
National Bank Note Company
No secret markScott 136 and 147 - There is clearly only light shading below the upper ribbon, below "THREE". Note that there is no heavy shading at the point where the two ribbons join.
Continental and American Bank Notes
Secret MarkScott 158, 184 and 207 - There is shading below the upper ribbon, below "THREE". Note that there is heavy shading at the point where the two ribbons join.
