1787 Connecticut Copper. Miller 33.7-Z.10, W-3435. Rarity-8. Draped Bust Left. Fine Details--Corrosion Removed (PCGS).
130.3 grains. Dark brown with areas of dark steel around the upper half of the obverse, isolated to the fields, and less concentrated in the reverse fields. This helps the design to stand out a bit and really isn't bothersome. The surfaces are quite porous and rough throughout, with the single exception of an area left of Liberty's face, which is unnaturally smooth, probably leading to the PCGS qualifier, though "smoothed" would probably be more accurate. Whatever the case, this work is quite old and gives no impression of a modern attempt at improvement. Somewhat deep flan flaws at the obverse rim near 10 o'clock, while lighter striated planchet flaws are seen on the reverse. Both sides retain decent detail, all things considered, though the reverse is clearly sharper with the letters, date and punctuation fairly clear. According to Syd's notes, this coin was unknown prior to its sale, in September 2017, to Michael Spencer. We are aware of just one other, the former Dr. Hall coin in the collection of the American Numismatic Society. That is not much different than this coin in terms of sharpness, though the surface quality seems a little better. In any case, that will almost certainly remain in the ANS holdings, and this one is therefore likely unique in private hands.
PCGS# 918357.
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From the Sydney F. Martin Collection. Earlier ex Kevin Vinton, September 2017; Michael Spencer, via David Wnuck, June 2018.

Estimate: $16000