Judging by the logo on the forkcrown this fork is from the era when Basso had acquired the Pogliaghi name and made the bikes (including forks), or smaller chance it was in the brief period that Rossin was making them before selling the name to Basso. In either case i'm pretty sure there's nothing unusual about one of those manufacturers contracting with the forger to stamp the Pogliaghi brand on the dropouts they bought but the practice was something that came into fashion at a particular time, maybe around the late '80s. Before then it would be unusual to see anything but the Big Brands stamped on Italian forgings: Campagnolo or Gipiemme.