The Yorkshireman's 1970s Californian scene, Portrait of an Artist, sold on the nose at $80m at Christie's in New York last night

With only two lots unsold, the auction house nets $362.6m in evening of avid bidding

New record for Joan Mitchell as fresh artists join the $10m-and-up club—but Bacon and Basquiat still dominate top prices in New York

Leaning on romance of Rockefeller name and its appeal to international and first-time buyers, the auction house triumphed in its marathon week of sales