The upcoming 13th annual Palm Beach Jewelry, Art & Antique Show, running from February 10 to 16—through Presidents Day weekend—will feature over 160 exhibitors from around the world, including M.S. Rau Antiques, the 104-year-old New Orleans shop that will put a series of presidential relics up for sale. From the personal belongings of a Founding Father to records of one of history’s most infamous assassinations, here are six bizarre and one-of-a-kind Americana offerings that e…