The Preliminary Assessment allows us to verify if there is enough evidence to support the authenticity of the item. This way, you avoid investing in a certification when the preliminary analysis does not recommend it.

The R$ 90 paid for the Preliminary Assessment will be deducted from the certification price if the certification is performed.

Preliminary Assessment is an initial professional analysis, performed remotely based on photos, information, and provenance elements provided by the client. Its purpose is to evaluate probable authenticity, estimate market value, and advise on next steps.

Certification is a more comprehensive analysis, which results in a formal document intended to professionally document the item's authenticity.

In most cases, it is not necessary to send the item. Analysis can be carried out remotely, based on high-resolution photographs, provenance information, and other elements requested by Mathias Meyer.

In specific cases, Mathias Meyer may request the physical shipment of the item.

Certification combines two main technical analyses: signature or handwriting analysis, by comparison with authentic examples, and analysis of the item's provenance.

Where relevant, the medium, historical context, and other available elements are also considered.

The certificate presents the conclusion of the analysis on the Glórias Authenticity Scale, from G1 to G5:

• G1 — Not authentic
• G2 — Probably not authentic
• G3 — Indeterminate authenticity
• G4 — Strongly supported authenticity
• G5 — Exceptionally supported authenticity

The scale allows for a clear expression of the degree of support for the conclusion obtained in the analysis.

Yes. Depending on the piece's profile and available opportunities, we can assist with its commercialization by presenting the item to our network of clients and collectors or to specialized dealers and auctioneers, whether in Brazil or abroad.

This service is optional and independent of the appraisal and certification. Should Glórias directly participate in the sale or intermediation, a commission will be charged, defined in advance according to the value and complexity of the operation, generally between 10% and 30%.

Any additional costs, especially in international sales — such as shipping, insurance, customs broker fees, taxes, exchange rates, and other expenses — will be communicated beforehand. The presentation or promotion of the item does not guarantee a sale, timeframe, or final price.

No. Certification is not mandatory to sell an item.

However, an independent certificate can increase buyer confidence, reduce doubts about authenticity, and facilitate marketability. The outcome also depends on the price, item presentation, and market demand.

Not necessarily. Certification increases buyer confidence, improves item liquidity, and can reduce price negotiation.

Because the buyer usually doesn't know you. Before investing thousands of reais, they want to reduce the risk.

A certificate issued by an independent expert professionally documents the item's authenticity, increases buyer confidence, and can facilitate a quicker sale at a better price.

The credibility of a certificate depends mainly on the reputation, experience, methodology, and independence of the expert who issues it.

A certificate only has market value when buyers, collectors, and professionals trust the competence and independence of the issuer.

Glórias operates in the Brazilian and international markets, and Mathias Meyer is a member of the International League of Antiquarian Booksellers (ILAB), an international organization of professionals in the rare books, manuscripts, and documents market.

The credibility of a certificate is directly related to the experience, reputation, methodology, and independence of the expert who issues it.

The certificate can be issued in Portuguese or, upon request, also in English, for an additional cost of R$90, with payment exclusively via Pix.

PSA, JSA, and Beckett are international benchmarks, especially in certain segments of sports memorabilia.

Glórias offers a specialized alternative for the Brazilian market, with service in Portuguese, analysis performed directly by Mathias Meyer, and, in most cases, no need for international shipping.

Each certificate receives a unique registration number and can be verified by email with Glórias through the QR Code and certificate number.

Yes. Before the final issuance, you will receive a version for review to check for any errors, omissions, or incorrect information.

After your approval, the final certificate will be issued in PDF and sent to your email.

The standard certificate is issued in digital format (PDF), with a digital signature and stamp, and sent via email. It contains the same content, registration number, and validity as the printed version.

If preferred, a printed version with a handwritten signature and physical stamp can be requested for an additional cost of R$ 150, payable exclusively via Pix.