Modern Coin Mart
ModernCoinMart owner John Maben entered the coin business full time in 1978. He is one of the world’s premier grading and authentication authorities. His more recent experience includes over eight years at NGC as Executive Vice President and a Grading Finalizer. John was a part-time grader at PCGS in the late 1980′s and has personally bought and sold well in excess of $100,000,000. in rare coins. His experienced staff is ready to help you achieve your numismatic goals, whatever they might be.