https://coinweek.com/world-coins/pcgs-g ... gold-coin/
The news about grading is, maybe, less interesting, the story is
PCGS Grades Rare 20th-Century Russian Gold Coin
PCGS Grades Rare 20th-Century Russian Gold Coin
Orice stiinta este un sistem de ipoteze; orice filozofie, un pariu cu timpul. Sistemele se pot substitui iar pariurile se pierd de obicei - parafrazandu-l pe Julio Cortázar via „Mironositele” de Federico Andahazi