Martin Gammon

Art market

Why the Christie's and Sotheby's duopoly is impregnable

The auction houses sell more than 80% of works priced over $1m at auction—can an underdog ever wrestle market share away from them?


The mirage of riches in museums’ vaults

Putting aside museum ethics, Martin Gammon looks at the financial viability of museums deaccessioning their collection as a quick fix for financial trouble

Leonardo da Vinci

The Salvator Mundi may have changed the market for ever—but we have been through this before

Martin Gammon on the historical precedents of the $450m sale