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

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

ASG Grades 1980 China 8 Fen Year of the Monkey Stamps

The block of four is a group of one of China's most beloved stamps. 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.