Bonhams

Bonhams is a privately owned British auction house and one of the world’s oldest and largest auctioneers of fine art and antiques. It was formed by the merger in November 2001 of Bonhams & Brooks and Phillips Son & Neale. Wikipedia*

On the C-SPAN Networks:
Bonhams has hosted 1 event in the C-SPAN Video Library; the first program was a 2016 Forum.