Object lessons

Object lessons: a medieval Flemish altarpiece, a luck-themed cabinet, and a rare cast of an Antonio Canova sculpture

Hundreds of years of historic works are on offer at Tefaf New York's fall edition, including these picks from the fair

Object lessons, May 2017

From a H.G. Wells-inspired print by Moholy-Nagy to a prehistoric Native American birdstone, our top picks of notable sales at auctions and fairs