在收藏品市场持续升温的当下，钱币评级机构如同钱币价值的“翻译官”，用专业标准为收藏者解读历史印记的经济价值。总部位于美国的PCGS（ Professional Coin Grading Service）是全球知名的第三方钱币评级鉴定机构，日前，PCGS正式推出中国古钱币评级服务，填补了 ...

AUSTIN, Texas--(BUSINESS WIRE)--HID Global, a worldwide leader in trusted identity solutions, today announced that Collectors Universe, Inc. has added HID Trusted Tag® Services to its Professional ...

Americans honor the loss 24 years after the devastating World Trade Center, Pentagon and thwarted Flight 93 9/11 terrorist attacks. by Bellevue Rare Coins Though some coins are more valuable than ...

Coin grading is the process by which a certified numismatist determines the grade, or physical condition, of an existing coin. Once the grade is determined, the value of the coin can then be ...