Every timepiece on Grailzee is independently inspected by Bennisson to confirm its authenticity, assess its condition, and uphold the highest standards of transparency and integrity, empowering buyers and sellers to transact with total confidence.
Each watch on Grailzee is independently authenticated by Bennisson. Their process confirms authenticity, verifies key components, and classifies condition with expert precision.
Buyers gain confidence through objective verification, while sellers benefit from increased trust and secure, dispute-free transactions.
Each authenticated watch includes a detailed certification report — an expert-backed document that enhances provenance and supports future resale.
Bennisson authenticates the core components of a watch — those essential to verifying originality. These must match factory specifications. If replaced, they must be manufacturer-authentic and clearly disclosed.
Components subject to regular servicing or natural wear are carefully reviewed and documented. Their condition helps contextualize the overall state of the watch and must be accurately described by the seller.
Watches with aftermarket or modified parts can be listed on Grailzee when clearly categorized and transparently described. Bennisson verifies the originality of all applicable manufacturer components.
Each certified watch is assigned a condition category based on wear, originality, and proper disclosure — following defined, professional criteria.
The condition of each timepiece is determined and disclosed solely by the seller supported by images, which serve as the primary disclosure of a watch’s actual state. Buyers are encouraged to review all photos carefully and request additional views if needed.
1
Upload clear photos and disclose service history or modifications.
2
Experts inspect components and verify the stated condition.
3
Buyer receives a certificate of authenticity while the watch remains in secure escrow.
Want to see exactly what our experts check, compare, and document? The full authentication standard is available for download and outlines every step of the process Bennisson follows.
Whether you're a collector looking for your next grail or a seller ready to list with full transparency, Grailzee offers a secure, trusted environment for high-value timepieces.