PCGS No: 

Rarity: Extremely Rare

Variety equivalents: 
Unlisted in Ryder or Bressett

Notes:
This variety was discovered By Ron Guth in the National Numismatic Collection at the Smithsonian Institution.  Shortly after its announcement, two additional examples were reported by Bill Anton, but both of those are believed to be counterfeits.

Images courtesy of the Smithsonian Institution

Sources and/or recommended reading:
"Copper Coins of Vermont" by Tony Carlotto

"The Colonial Coins of Vermont" by Hillyer Ryder

"Vermont Copper Coinage" by Kenneth Bressett (Chapter 11 in "Studies on Money in Early America" by Eric P. Newman and Richard C. Doty)

"Walter Breen's Complete Encyclopedia Of U.S. And Colonial Coins" by Walter Breen