100% Lifetime Authenticity Guarantee Policy

Madison Avenue Bag Atelier LLC • Standard Operating Procedure & Customer Protection Charter

Unconditional Lifetime Authenticity Guarantee

Madison Avenue Bag Atelier LLC provides an unconditional 100% Lifetime Authenticity Guarantee on every single pre-owned luxury handbag accessory, replacement shoulder strap, bag charm, padlock set, and hardware item sold. Every item includes a verifiable digital Certificate of Authenticity (COA). If any item is deemed inauthentic by an accredited third-party authenticator, the buyer receives an immediate 100% full refund including all shipping costs.

1. Dual-Tier Pre-Listing Authentication Matrix

Before any accessory is cataloged or offered for sale, it must successfully pass two independent, sequential verification tiers:

• Tier 1: Entrupy AI Optical Microscopic Scan: Our high-magnification optical scanners capture microscopic surface imagery of coated canvases, leather grain pores, edge coating paint, foil font typography, and hardware metal alloy density. The proprietary Entrupy computer vision algorithm matches these against millions of authentic data points.
• Tier 2: Master Leather Artisan Physical Inspection: A comprehensive 50-point physical inspection conducted by senior master leathercraft specialists with 12+ years experience. They examine saddle stitch tensions, hardware weight/balance, spring carabiner mechanisms, and date code font geometry.

2. Tamper-Proof Security Tagging & Digital COA

Every dispatched item is affixed with our numbered, tamper-evident holographic security tag and is accompanied by a unique digital Certificate of Authenticity (COA) registered on our public server. The COA features a scannable QR code directing straight to the item's individual inspection record.

3. Financial Guarantee & Immediate Remedy

In the exceedingly rare scenario that a recognized independent luxury authentication body (such as Real Authentication, Authenticate First, Bababebi for Hermès, or Entrupy) issues a contrary determination on an accessory purchased from us, Madison Avenue Bag Atelier LLC will immediately issue a 100% refund of the full purchase price, including initial shipping fees and return postage, within 24 hours of receiving the claim.