ASG Shanghai Offers 20,000 RMB Bonus for New Stamp Graders Hired

ASG Shanghai Offers 20,000 RMB Bonus for New Stamp Graders Hired

Apply today to join a growing global group of companies that certify collectibles. Learn More >

ASG Certifies Rare Sheet of 1953 China Military Stamps

ASG Certifies Rare Sheet of 1953 China Military Stamps

Because these stamps were quickly recalled after being issued, only a small number survive today. 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 >

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 >

ASG Announces Free Online Tool to Verify Certification

ASG Announces Free Online Tool to Verify Certification

The quick, easy and free way to verify and view any ASG-certified stamp is available now! 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.

Stamps We Grade

View the full listing of stamps we grade.

Learn more >

How to Submit

Learn how to submit stamps to ASG for expert authentications and grading.

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News

Keep up with the latest news and announcements from ASG.

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