Authentication is the quiet half of luxury asset lending. The borrower thinks about the loan amount; the lender thinks about whether the asset is what the borrower says it is. A Rolex that is not a Rolex, a Birkin assembled from genuine and counterfeit parts, a Cartier piece restored with the wrong components, a watercolor with an attribution that does not hold up — each of these problems sinks a loan offer if it is discovered late and creates risk for the lender if it is missed entirely. Robust luxury authentication is the foundation of an asset-backed lending program that can actually fund.
Borro’s authentication protocol is the same regardless of asset class — confirm the piece before the loan is offered. The detail of the protocol varies by category.
Watches
A watchmaker examines the piece under loupe and microscope. Movement reference numbers are matched against the case reference, the dial typography is checked against period-correct fonts, the hands and indices are verified for shape and lume composition, the case proportions and bezel measurements are confirmed, and the bracelet endlinks and clasp are inspected. The serial range is cross-referenced against the production records the maker has published or that have been documented through enthusiast scholarship.
Counterfeit Rolex sport models have improved over the past decade to the point that surface inspection is no longer enough. The Borro process catches what surface inspection misses.
Handbags
A handbag specialist examines the stamping (date code, blind stamp, craftsman code), font geometry, stitching count and angle, hardware engraving, hardware weight, interior label, base structure, and the consistency of the leather grain. For Hermès in particular, the level of forensic detail required to confirm authenticity has risen significantly as counterfeit production has improved. The full landscape of Hermès handbag valuation is covered in designer handbags as an asset class.
Jewelry
A jewelry specialist confirms the signature or hallmark, examines the design against the maker’s period-correct catalogue, assesses the materials (gold purity, platinum, stone authenticity), and looks for evidence of restoration that would affect value. For signed pieces, the work extends into the maker’s archives where appropriate. Borro has detailed the signature-premium framework in the signature premium on signed jewelry.
Diamonds and Colored Stones
A gemologist examines the stone, confirms the certification (where present) against the actual stone via laser inscription or other identifying marks, and grades any uncertified stones against the four Cs. Lab-grown versus natural identification is performed where any question exists. For fancy color diamonds and important colored stones, the appraisal cross-references against current auction comps and the relevant indices.
Fine Art
Authentication of fine art is the most variable category. Where the artist has a catalogue raisonné, inclusion (or expected inclusion) anchors the work. Where there is a foundation, the foundation’s opinion or examination process is engaged. Provenance documentation, exhibition history, and publication record build the case. Technical examination (UV, infrared, X-ray, pigment analysis) is undertaken when appropriate. For Old Masters in particular, the authentication work is the most complex part of the appraisal.
Classic Cars
A car specialist verifies the chassis, engine, transmission, and body numbers, confirms matching-numbers status, reviews restoration history, examines period-correct components, and inspects for any chassis-level modifications. Major restoration shops keep records that can be cross-referenced; concours awards and period photography support attribution.
Wine and Whisky
Specialists examine the bottle, label, capsule, cork (where visible), fill level, and any provenance documentation. For older vintages, label aging, capsule oxidation, and fill-level consistency with expected evaporation curves all factor into the authentication. Original wood cases and original receipts strengthen the chain of provenance.
Why Specialist Authentication Matters for Borrowers
The borrower benefits from specialist authentication in two specific ways:
- Higher loan offers. When the lender is confident in authenticity, the discount applied for uncertainty disappears and the LTV moves toward the upper end of the range for the asset class.
- Faster funding. Authentication issues catch most loan delays. A piece that passes specialist examination on first review moves to funding without renegotiation.
For pieces that have not been formally authenticated before, the Borro appraisal also produces written documentation the borrower can use later — whether for insurance, future sale, or estate planning.
Frequently Asked Questions
How long does authentication take?
For most pieces, authentication is completed within one or two business days of receipt at a Borro vault. Complex cases — foundation review for art, particularly intricate forensic work on watches or handbags — can extend longer.
What if a piece fails authentication?
Borro communicates the finding to the borrower with the supporting analysis. The borrower can elect to return the piece, pursue independent expert review, or, where appropriate, restructure the loan on a different basis.
Will I receive a written authentication report?
Borro produces a written appraisal that documents the piece, its condition, and the basis for the valuation. The authentication elements are embedded in this report.
Does Borro engage outside experts?
For specialized cases — particularly fine art and certain categories of jewelry — Borro engages independent appraisers and works with the relevant foundations or catalogue raisonné projects.
Can I get authentication without taking the loan?
Borro’s authentication is performed in the context of a lending decision. For standalone authentication, specialized appraisal services from the auction houses and independent appraisers are the typical channel.
Talk to Borro About a Loan
If you are considering borrowing against a luxury asset and want to understand the authentication process before sending the piece, Borro’s specialists can walk through the protocol for your specific category. The conversation is confidential and the authentication is included in the loan process.
