DALLAS — The May 15 American Art Signature Auction realized $4.3 million over just 91 lots, with a dollar-value sell-through rate of 93 percent. It was led by the sale of a much-discussed, newly surfaced work by Agnes Pelton, which sold for $525,000, including buyer’s premium. Pelton’s “Purple Star Icon” emerged as an exceptional piece among her rare transcendental abstractions; only four of her Desert Transcendental paintings — her most iconic and sought-after works — have graced the auction block in the last 29 years, and this larger and pristine variant of her historicized Purple Star Icon was until now known only through archival records. For information, www.ha.com or 214-528-1425.