Mathias Meyer has been an expert in autographs, manuscripts, and historical documents since 2010. A member of the International League of Antiquarian Booksellers (ILAB), he works with collectors, sellers, institutions, sports clubs, and auction houses in Brazil and abroad.
What is the difference between a Quick Opinion and a Certificate?
The Quick Opinion is a professional assessment intended for the item's owner. The Certificate of Authenticity is a digital PDF document, signed, stamped, and numbered, intended to permanently accompany the item.
The certificate can accompany the item in future sales, collections, inventories, successions, and transfers of ownership.
What you receive
✔ Expert authenticity analysis
✔ Market value estimate
✔ Professional digital PDF certificate
✔ Signed, stamped, and numbered document
✔ Reference number
✔ In Portuguese or English
✔ File ready for sale, collection, inventory, or personal archive
Who this service is for
✔ Collectors
✔ Sellers
✔ Buyers
✔ Auctioneers
✔ Sports clubs
✔ Artists
✔ Institutions
How it works
1- Send clear photos and information about the item
2- Analysis is performed by an expert
3- Receive your digital certificate by email
Price
R$ 490 per item. If you have already contracted a Quick Opinion, the amount paid (R$ 90) will be discounted, totaling R$ 400.
Options
✔ Certificate in an additional language: + R$ 90
✔ Printed version sent by mail: + R$ 90
✔ Items with multiple signatures: from R$ 790
Professional packages available for auctioneers, dealers, sports clubs, artists, and institutions.
Important
✔ The certificate is issued based on the expert analysis of the item and the information provided by the client.
✔ Unlike the Quick Opinion, the Certificate of Authenticity is a formal, signed, and numbered document, the issuance of which involves the professional responsibility of the expert.
Do you have an exceptional piece?
In some cases, Glórias can buy the item directly or accept it on consignment.
A professional document to accompany your item today and in the future.
