1879 Gold Dollar. JD-1, the only known dies. Rarity-6. Proof-66 * Ultra Cameo (NGC). This is a very rare issue in Proof as there were only 30 pieces struck in this format, of which perhaps 14 to 18 exist today (per John W. Dannreuther, 2018). This exceptional upper end Gem offers attractive surfaces, boldly reflective fields, and impressively strong contrast. The fields and devices are both drenched in rich golden-orange color that is as vivid and fresh as the day of striking. No detracting marks or hairlines are apparent, as expected for the assigned grade, and the design elements are all full save for the letters BERT in LIBERTY which were nearly polished off the die (as made). Tiny raised lumps on Libertys neck (also as made) were caused by a trace of rust in that location on the obverse die. This is our first offering for this rare and elusive issue in a decade, and it represents an important bidding opportunity for advanced collectors of classic U.S. Mint gold coinage. PCGS# 97629. NGC ID: 25EN. NGC Census: 2, both of which have received a * designation for superior eye appeal; 0 finer in any category. The corresponding PCGS Population is 0/2 (Proof-67 Deep Cameo finest at that service).