In his last years, Percival gave silver cups to a few people close to him. One, given to the son of his attorney, offered a brief summary of his career. As well as anything, the inscription explains the man. Percival wrote: "This Cup, with the Donor, has made three cruises to the Pacific, one to the Mediterranean, one to the , two to the West Indies, and once around the world, a distance of about 150,000 miles. Has been 37 years in service and has never refused duty." Some years ago, a private collector found the cup in a London flea market, and it was sold for $10,000 in a 2016 Cape Cod auction.