The “Plaid” Pocket Lighter from the Maxfield Private Collection is a vintage S.T. Dupont lighter made in France circa 1965. Crafted in gold-plated metal with a plaid-pattern finish, each lighter features a unique serial number, the DuPont maker’s mark, and the initials of the artisan who assembled it. Marked “20u” for its 20-micron gold plating, the piece reflects the precision craftsmanship and enduring quality associated with S.T. Dupont.