NUMISMATIC GUARANTY CORPORATION (NGC) is the world's leading and largest third-party grading company, having graded more than 42 million coins. Over the last 30 years NGC has graded many of the world's most important coins and collections, including pieces from the Smithsonian Institution, the national museum of the United States, and the Shanghai Mint Museum. Collectors and dealers prefer NGC for its accuracy, consistency, and integrity. Coins that have been graded and authenticated by NGC are backed by the NGC Guarantee. Our graders are completely impartial and do not buy or sell coins commercially.
Professional Coin Grading Service (PCGS) represents the industry standard in third-party coin certification. By establishing a universal grading standard, PCGS has paved the way for coin enthusiasts to enjoy buying and selling coins with confidence.
The advent of the third-party, independent appraisal of a coin's physical condition (which is the basis of its grade), backed by the PCGS Guarantee, our world-class numismatic experts and our network of reputable authorized dealers, provides a dependable form of protection for rare coin collectors. Our respected grading standard has enabled PCGS-graded coins to realize record prices in the marketplace.
Since 1986, when PCGS began serving the coin-buying public, we have graded more than 30 million coins with a total market value of over 29 billion dollars (U.S.). PCGS standardized grading has forever changed the process of buying and selling coins, increasing confidence in buyers and sellers alike.
Established in 1975, New Century Coins and Notesi s 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.
TRIGOMETRIC is Malaysia's largest auctioneer of numismatic & philatelic collectible items. The name TRIGO has become synonymous with experience, integrity and quality for as long as it's foundation. TRIGO organises 2 large public auctions every year, in March and October each year in Kuala Lumpur, the capital of Malaysia. In conjunction with the auctions, TRIGO also organises the only international numismatic fair in Malaysia.
TRIGO also publishes 2 very complete numismatic reference, for "Malaysia, Brunei & Singapore". The other reference being "Hong Kong & Macau"