Stamp Graded by ASG Has Starting Price of Over $100,000 in Auction

Stamp Graded by ASG Has Starting Price of Over $100,000 in Auction

John Bull Auctions is offering the stamp, which contains an error that makes it extremely valuable. Learn more >

ASG Grading Stamps On-Site in Hong Kong in December

ASG Grading Stamps On-Site in Hong Kong in December

ASG will conduct its second on-site grading event in Hong Kong, China from December 13-27. Learn more >

ASG Enhances Grading Scale by Adding ASG VF/XF 88 Grade

ASG Enhances Grading Scale by Adding ASG VF/XF 88 Grade

The new ASG VF/XF 88 grade further differentiates stamps near the top of the ASG grading scale. Learn more >

ASG Celebrates 1 Million Stamps Graded

ASG Celebrates 1 Million Stamps Graded

The third-party certification service is brining greater security to the philatelic marketplace. Learn more >

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 >

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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.

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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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