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ASG Certifies Two Rare 1897 Red Revenue Stamps

The high-grade examples of this stamp are among the rarer collectibles in Chinese philately. Learn more >

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 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 >

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.

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