1879 Gold Dollar. JD-1. Rarity-6. Proof-64 Cameo (PCGS). CMQ.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 Choice specimen offers attractive surfaces, boldly reflective fields, and strong cameo contrast. The fields and devices are both drenched in rich orange-rose color that is as vivid and fresh as the day of striking. Only a few wispy handling marks 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 only our third 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# 87629. NGC ID: 25EN.PCGS Population: 6; 2 finer in this category (both Proof-65 Cameo).