Images courtesy of Superior Galleries

Significant examples:
"Very Fine-25" (illustrated above).  Superior "Pre-Long Beach Sale", 06/2000:147, where it was described as follows:
"1797 S-125 R5 VF25 Nice glossy olive brown and chocolate with hints of reddish brown toning in a few protected areas of the obverse. The surfaces are excellent, the only marks being an extremely faint hairline from the earlobe down to the shoulder and a couple tiny nicks on the neck. MDS. Listed as stand-alone CC#1 in the Noyes census and tied with 3 other pieces for CC#1 in the Bland census (but the other 3 have serious defects). This is the Noyes plate coin for the variety, and the obverse is plated in Penny Whimsy. A great cent, one of the highlights of the CDS collection. Comes with a great pedigree, as you would expect.
     Ex David Proskey-Henry C. Hines-Dr. William H. Sheldon 4/19/72-R.E. Naftzger., 2/23/92-Eric Streiner 4/7/92-C. Douglas Smith-Dr. Robert A. Schuman."

Sources and/or recommended reading:
"Penny Whimsy" by Dr. William H. Sheldon

"Walter Breen's Complete Encyclopedia of U.S. and Colonial Coins" by Walter Breen

Relevant collector organizations:
Early American Coppers Club