Gunther Sachs’s NY Townhouse Back on Market for $24m: Check out the Peter Halley paintings in these photographs of the Paul Rudolph designed townhouse once owned by Halston and then Gunther Sachs. The building has been on and off the market for some time since Gunther Sachs’s death and been subject to some tabloid speculation that never panned out. …

Sam Francis Foundation Partial Catalogue Raisonné Online: It’s not really clear how the Sam Francis Foundation’s new online catalogue raisonné resource advances the artist’s interest when the original catalogue raisonné remains solely available in print. …

Heritage Aims for Comic Book Record Auction: In Chicago, May 10-12 Heritage Auctions will take a shot at running the largest comic book auction by volume led by two lots with $600k estimates, one of which is a Action Comics #1 that has seen prices as high as $3.2m for works in the best condition. …

“Global city prices hit a high plateau, and there’s nowhere further they can go” The average age of the world’s top cities is rising as older residents move to city centers and the young are locked out by high prices. …

Jeff Koons Production Delays Exasperate Collector: Collector Steve Tananbaum is pretty fed up with Gagosian Gallery and Jeff Koons. His legal complaint has become the subject of a fair amount of conversation for its odd language (“archaic System”,) odd quotation of Hamlet, and oddly redundant adjectives (“naked, unadorned.”) But the conflict does reveal something important about how frustrated collectors have become trying to get their works from Koons or their money back.