Variety equivalents: 
Breen 1000

Rarity: Very Rare

Notes:
This was the only use of the obverse die.

The reverse die of this variety was also used on:
1785 Immune Columbia / Nova Constellatio, Pointed Rays, Extra Star 
1785 Immune Columbia / Nova Constellatio, Pointed Rays, No Extra Star 
1785 Immune Columbia / Nova Constelatio, Blunt Rays
1785 Vermont - Ryder 1

Images courtesy of Ira & Larry Goldberg Coins & Collectibles

Significant examples:
Bowers and Ruddy Galleries sale of the Garrett collection, Lot 1336

Recent appearances:
SEGS Fine-12, "Corroded."  Ex - C4 Auction - Paul Arthur Norris - Ira & Larry Goldberg Coins & Collectibles, Inc.'s "Pre-Long Beach Sale", September 23 & 24, 2002, Lot 54, illustrated, where it was described as follows: "SEGS graded Fine-12 "Corroded" and "*" holder. Dark patina in the fields with lighter copper on the devices and lettering. As always seen on this issue, the planchet was a touch small and the tops of the date are all that show. There is a rough area noted in the right obverse field. Breen notes that this coin was struck around May to July of 1789. While not the most perfect surfaces, this is a rare coin which is seldom offered at all, and never in nice condition. Note that PCGS has not graded any of this issue, confirming the rarity. Breen-1000 per his Encyclopedia with the spelling Ceorcivs III. Rex as the "G" punch was broken or missing at the time the dies were engraved."

Sources and/or recommended reading 
"Walter Breen's Complete Encyclopedia of U.S. and Colonial Coins" by Walter Breen