Dr. Charles Ruby - Superior 2/1974 - Superior 10/1977 - attributed to the Davy collection by Pollock (per an unclear Breen citation), but not in the 9/2010 Goldbergs sale of Davy's error half cents.
Ron Guth: Judd 17 is a copper die trial of a 1795 Half Dollar (Overton 117). After striking, the coin was cut-down and used as a planchet for a 1795 half cent, Cohen 6. Only one example is known, although more may be discovered in the future as collectors examine their overstruck half cents more closely.
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