Several New York galleries have hit major milestones in recent months, offering lessons from those in charge.
Pace Gallery's 65th anniversary group exhibition, on show in Geneva until 7 November, is a notable example.
Looking at recent headlines, you could be excused for thinking the traditional dealer model is falling apart.
However, a closer look reveals that New York galleries are thriving with exhibitions commemorating anniversaries of a decade or more in business.
The trend offers a heartening counterpoint to the challenges affecting the sector this year.
Author's summary: Galleries mark major anniversaries despite market challenges.