Hendrick van Balen (1575-1632), Venus and Mars Surprised by Vulcan, oil on copper, the reverse with the maker's mark of Pieter Stas and the date 1606, 61.5 by 44 cm. (24 1/4 by 17 3/8 in.). The still-life elements are the work of Van Balen's frequent collaborator Jan Brueghel the Elder (1568-1625). Estimate: £60,000-80,000 ($90,000-120,000)