Like Castello's "Fiammata" stamp, the Occhio di Pernice designation commends pipes that showcase exceptional grain, specifically birdseye, compared to the Fiammata's flame grain. As such, this bent Billiard displays a stunning cross-grain pattern with whorls of birdseye highlighted across the flanks in a rich, honey-blonde stain. The shape itself features an upright Billiard bowl, while the elongated shank and downturned stem manifest the flowing sinuosity often displayed in Castello's bent pipes.