William Henry Bolt 'Antigua ' Pen That Writes Beautifully, Carries Comfortably, And Catches The Eye. The Antigua Features Our Bolt Action Mechanism, Inspired By Bolt Action Rifles, Which Locks Open And Spring Releases Closed – And Yes, It’S A Lot Of Fun To Play With. Barrel Is Crafted From Our 100,000 Year Old Fossil Coral, Salvaged From An Abandoned Lime Pit In The Florida Keys. Trim And Accents Are Stainless Steel With Two Inlaid Sapphires