re: U.S. 1870 3 Cents Washington blue and not green?
#158 comes in a bluish green shade
#207 is blue green
I can't tell which stamp it is. My guess would be 158. Not in the greatest condition, so with all the wear and tear on the stamp, probably also some fading.
re: U.S. 1870 3 Cents Washington blue and not green?
Perhaps a bit of a color changeling... I don't know if we could ever tell what chemical or UV exposure would do, or perhaps impacts of storage conditions.
re: U.S. 1870 3 Cents Washington blue and not green?
Just so happens that I found a blue Washington amongst a batch of 1c Franklin Banknotes. I would assume it to be chemical. Most of the 3c Washington Banknotes have been exposed to sunlight off and on for the 140+ years that they have been around.
