NANTUCKET, Mass. – Rafael Osona’s August sale is known for presenting exceptionally curated material. This year’s two-day event, the 43rd annual installment, scheduled for Saturday, August 5 and Sunday, August 6, presents choice properties from Nantucket’s coastal compounds and historic in-town estates, including 151 lots across both days from the estate of Stephen Weinroth. Absentee and Internet live bidding will be available through LiveAuctioneers.