ASG-certified Red Revenue Stamp Realizes More than $13,000 at Auction

ASG-certified Red Revenue Stamp Realizes More than $13,000 at Auction

Two other stamps graded by ASG realized over $6,000 each in a John Bull Auctions sale in December. Learn more >

ASG Grading Stamps On-Site in Hong Kong in April

ASG Grading Stamps On-Site in Hong Kong in April

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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 >

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.

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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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