Sotheby's Allan Stone Evening Sale = $54.8m May 9, 2011 by Marion Maneker More from Art Market MonitorLondon Gives Some Second Thoughts About June SalesSotheby’s Closes the Gap in Contemporary as the Show Overshadows the BusinessSotheby’s $20m Late Lichtenstein Nude for MaySotheby’s London Contemporary Evening = £118m ($144.5m)Sotheby’s Goes German in London Led by BaselitzRichter’s Eisberg Estimated at £8-12m Leads Sotheby’s London Sale