Your questions.Our answers.
Answers to help you prepare for our first conversation. Authentication takes place in the workshop, on the object itself. This website lets you contact us; it does not accept online orders or payments.
25 answers to guide you.
Your project
Good support begins with an initial exchange.
How should I present my project?
Use our contact form and tell us what you need, the nature of your objects and their location. A few details about your aim — understanding a collection, authentication, valuation, acquisition or protection — will help us prepare for our conversation.
What services do you offer?
We offer collection audits, authentication, valuations, advice and protection for valuable objects. These services can be combined to suit your plans. Explore the house and our method.
What objects can you examine?
Our eleven specialist fields cover luxury leather goods and accessories; horology; jewellery and gemmology; fashion and couture; rare wines and spirits; fine art and sculpture; design and furniture; vehicles and automobilia; books and manuscripts; collectables and memorabilia; and the arts of Asia, Africa, Oceania and the Americas. Tell us about your object so we can agree the appropriate examination.
Can we order or pay on the site?
No. This website presents our services and lets you contact us. There are no online orders, card payments or customer accounts. We agree the terms of any engagement directly with you.
How are fees and timescales agreed?
Fees and timescales depend on the type and number of objects, the research required and handling arrangements. We agree the scope, fees and schedule with you before work begins. Please mention any deadline in your enquiry.
Examination of your objects
See the object, understand its material, bring together the clues.
Do you offer online authentication?
No. Authentication takes place exclusively in the workshop, through examination of the object itself. We do not authenticate objects from photographs or remote examinations. For oversized objects, an expert visits you on site.
What are the photographs used for during the first exchange?
Photographs help us identify the type of object, plan its handling and agree examination arrangements. They never replace a physical examination or constitute authentication.
Can I drop off my item directly?
Yes, when you are near our offices. Contact us in advance to arrange an appointment and agree on the drop-off location. We will explain how to prepare your item and the documents to bring.
How do you examine oversized objects?
For furniture, vehicles, artworks and other objects that cannot be shipped safely, an expert travels directly to the site. Please include their location, approximate dimensions and any access restrictions in your enquiry.
What documents should be prepared?
If available, gather invoices, previous certificates, archive records, provenance documents and maintenance or restoration histories. You can still contact us without these documents; simply tell us what information you have. Please avoid cleaning, dismantling or altering the object before speaking with us.
Appointments & transport
Arrangements tailored to each object’s value and nature.
How does secure shipping take place?
For items that can be shipped, we arrange for a secure special package, tracked and insured. Our team provides packing instructions and agrees collection or shipping arrangements before your item leaves you.
Can I send an item without contacting you first?
Contact us before sending any object. We need to agree the receiving workshop, transport arrangements and appropriate handling. Do not use an address from an old document without confirmation from our team.
Is my item insured during transport?
The shipping arrangements we organise include insurance. We agree the declared value, route, collection conditions and return arrangements with you before dispatch. This must be arranged in advance; it does not automatically cover shipments you organise yourself.
Where are your offices?
We have offices in Paris, Switzerland and the United States and support our clients across much of Europe. Tell us the country and city where your objects are located so we can agree suitable arrangements.
How is my object returned after examination?
We agree return arrangements with you: collection by appointment or secure return shipping for suitable items. The arrangements depend on the object and the agreed process.
Conclusions & documents
References explained, placed in their context.
Authentication and valuation: what’s the difference?
Authentication concerns the identity and characteristics of an object, with regard to its origin and its manufacture. Valuation aims to situate its value at a given date and in a given context. The two approaches can complement each other, but answer different questions. Check out our pages Authentication and Valuation.
What documentation will I receive after examination?
The findings and documents depend on the agreed engagement. We explain in advance what you will receive and its scope, whether an examination report, inventory, valuation or other documentation. We also explain relevant observations and any matters requiring further research.
Is an invoice or an old certificate sufficient?
These documents are useful for reconstructing the history of the object and preparing for its examination. However, they must be compared to the object itself and other available elements. Show us the documents you have; they do not replace the physical examination.
Does an estimated value remain valid over time?
A valuation is linked to a date, the condition of the object and a market context. It may evolve, particularly after restoration, new research or a change in the market. Contact us if you wish to re-examine it during a sale, transfer or protection project.
I already have a Woltz & Welstein certificate: who should I contact?
Contact our team with the certificate reference and details of the object. We can assist with questions about viewing a certificate, lost documents or a change of ownership. Please keep personal documents private and use our contact form to initiate the exchange.
Advice & protection
Prepare the rest of the story, with the right people.
Can we have an entire collection examined?
Yes. A collection audit helps organise an inventory, bring together available information and identify where examination or valuation is needed. It can cover a coherent collection or objects from several specialist fields.
Can you support me before a purchase or sale?
Our Advisory support helps clarify your objectives, review the available information and prepare your decisions. Tell us about the object, the circumstances and your deadline so we can propose an appropriate scope of work.
Which objects can be subject to protection?
We can review protection requirements for the valuable objects we authenticate, including bags, watches, jewellery, artworks, furniture, vehicles and other collectables. Arrangements depend on the objects, their value and their use. Authentication does not automatically activate insurance.
Can cover include theft, damage or a house move?
These situations can be studied as part of your request: theft, damage, transport or moving. Specify where the objects are kept and the planned movements. The guarantees retained, their ceilings, their exclusions and their effective dates are defined in the proposal and the applicable documents. Discover our page Protection.
How do you use the information I provide?
The information transmitted is used to understand your request, to prepare our exchange and to organize the support agreed with you. Communicate only the elements that are useful for this first contact. You will find details and how to exercise your rights in our privacy policy.
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