The Difference Between The Graded and Non-Graded Mandela Coins

The coins that have value are those that are graded by the grading companies, so you must know and be able to differentiate between the graded and non-graded Mandela coins. Grading Companies The largest and most respected organisation of professional coin dealers is called PNG (Professional Numismatists Guild) and ICTA (Industry Council for Tangible Assets). …