CCG to Hire Top Stamp Experts

CCG to Hire Top Stamp Experts

CCG is seeking world-class stamp experts to expand its stamp grading services in the United States. Learn more >

ASG Certifies Block of China’s Most Iconic Zodiac Stamp

ASG Certifies Block of China’s Most Iconic Zodiac Stamp

Issued in 1980, several factors make the Golden Monkey one of China's most popular stamps. Learn more >

CCG Soared to New Heights in 2021

CCG Soared to New Heights in 2021

ASG and the other CCG companies certified over 9 million collectibles in 2021. Learn more >

ASG Introduces New Holders in Exclusive Collaboration with He Zi She

ASG Introduces New Holders in Exclusive Collaboration with He Zi She

The ASG Midsize and Sheet Holders allow for greater accommodation of stamp sizes than ever before. Learn more >

Learn About the ASG Grading Scale

Learn About the ASG Grading Scale

ASG grades stamps according to an internationally accepted grading scale of 1 to 100. Learn more >

An expert and impartial stamp grading service from the people behind NGC, PMG and CGC. Subscribe for updates >

Verify ASG Certification

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What is ASG Certification Verification?

This tool can help you to verify that your ASG holder is genuine and has not been tampered with. It can also be a useful starting point to research your ASG-certified stamp.

Instructions

Enter a stamp's ASG certification number (circled in the image) to confirm its description and grade in ASG's database and, if available, view the images of the stamp taken by ASG.