The Certified Collectibles Group (CCG) is the world's leading provider of expert, impartial and tech-enabled services that add value and liquidity to collectibles. Its iconic companies include Numismatic Guaranty Company (NGC), Paper Money Guaranty (PMG), Certified Guaranty Company (CGC) and Authenticated Stamp Guaranty (ASG).

Since 1987, the Certified Collectibles Group companies have certified over 90 million coins, banknotes, comic books, TCGs, sports cards, video games, home video collectibles, stamps and more. Today, CCG serves the world of collectibles online and at its offices in the United States, United Kingdom, Germany and China.

These services share a common approach that is rooted in complete independence and objectivity. The companies do not buy or sell collectibles, and their full-time graders are prohibited from commercial trading to prevent conflicts of interest.

Noonans' headquarters are situated in the heart of Mayfair, London, but the company has expanded over the years and now has a regional office in Hampshire and overseas offices in Canada and Singapore, as well as an extensive network of representatives worldwide and a global online presence

Established in 1975, New Century Coins and Notes is a renowned specialist in coins, banknotes and medals. We have been consultants on authenticity for official bodies such as the Hong Kong Museum of History.