Authentication, certification, and sale of autographed items

We appraise, certify, and value your rare autographs and manuscripts.

Meet the expert

Mathias Meyer is a French autograph expert, active in the national and international market since 2010. He works with collectors, sellers, specialized stores, auction houses, and clubs through technical analysis, market valuation, and document certification of collectible items. He is a member of ILAB (International League of Antiquarian Booksellers), an international association that brings together recognized professionals in the rare books, manuscripts, and autographs market.

About Glórias

A rigorous and transparent process

  • Can your item be authenticated? How much is it worth? What should you do with it?

    Ideal for those who want to know what they have in hand, out of curiosity or considering selling. It is also suitable for those who want to avoid mistakes when buying from strangers. If the analyzed elements are favorable, professional certification is a logical continuation of the process. R$ 90 per item.

    PRELIMINARY ASSESSMENT 

  • Valorize seu item com um certificado profissional

    After the preliminary evaluation, it is mandatory. Professional certification helps owners present their items in a structured, documented, and transparent manner. It is recommended for those who wish to sell in the national and international market for autographed items — we also assist in selling the pieces — as well as for those who only wish to document and add value to an item in their collection. Starting from R$ 490 per item.

    CERTIFICATION 

  • Sell your autographed item to the right audience

    Do you have an autograph, document, or memorabilia to sell? Send us photos and information about the item and find out if Glórias can buy it or help you sell it. We present the items to Brazilian and foreign collectors interested in this type of piece. 20% commission, with a minimum of R$ 500.

    SELL YOUR ITEM 

Examples of analyzed, certified, and sold parts

  • Mini boots signed by the 1958 Selection

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  • Large autographed portrait of Alberto Santos-Dumont (1919)

  • Autograph by Steve Wozniak (2003)

  • Handwritten letter from Carlos Gomes (1885)

  • Fashion drawing by Yves Saint Laurent (1960s or 1970s)

Glories Collection (from R$ 600 to R$ 900,000)

A selection of rare autographed items, chosen for their historical importance, provenance, and condition.

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Exceptional parts and assemblies (price on request)

  • Becoming Senna

    Two handwritten letters by Ayrton Senna to his best friend, totaling 25 pages, with never-before-seen drawings and photographs, dated 1979, document his performance in European karting and the beginning of his journey towards Formula 1, at 19 years old. Presentation in English.

    See 

  • Alberto Santos-Dumont

    The most beautiful collection of manuscripts and photographs of Alberto Santos-Dumont brings together 30 decisive years of his life. These are rare and exceptional documents that reveal the aviation pioneer and also a man of great values. Introduction in French.

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  • Signed Jorge Amado

    Unpublished correspondence from Jorge Amado and Zélia Gattai to the Olinto couple, covering nearly three decades of friendship: Jorge’s daily life, the creative and editorial process, adaptations for film and television, Afro-Bahian culture, and his relationship with Zélia.