Claire Delacroix

Auction House Correspondent

Claire reports from Phillips, Christie's and Sotheby's watch auctions worldwide. Former Antiquorum cataloguer, she knows which Patek Philippes set the market.

Articles by Claire Delacroix (4)

The Provenance Premium: How Documentation Multiplies Auction Values

Quantitative analysis of 50+ major auction lots reveals how extracts, boxes, and provenance create 2x to 10x premiums across price tiers from 2020-2024.

May 4, 2026

The Tropical Dial Forgery Crisis: Authentication at Auction

How Phillips, Christie's, and Sotheby's now use spectroscopy and UV analysis to authenticate tropical dials after high-profile withdrawals—forensic methods collectors need to understand.

April 30, 2026

patek-philippe

Why Patek 1518 Provenance Multiplies Value: Auction Case Study

How documented ownership history transforms identical Patek Philippe 1518 perpetual calendars into eight-figure auction results—with specific lot comparisons revealing 300-800% provenance premiums.

April 30, 2026

Why Provenance Adds 30-400% Premiums: Auction Data Analysis

Quantitative analysis of 2019-2024 auction results reveals which provenance types command genuine premiums—and which are marketing fiction.

April 21, 2026