Newman XI Pushes Total for NGC-Certified Coins to $60 Million
Numismatic Conservation Services
NCS provides professional conservation services for public and private collections of coins, tokens and medals.
Finest known copy of Action Comics #1 CGC Graded 9.0 sells for record $3.2M on eBay.
CAG-certified Armstrong Family Collection Tops $5.2 Million in First Auction
Authenticated Stamp Guaranty
CCG launches ASG, an expert and impartial grading service for collectible stamps.