From my personal collection. Parting with a few pieces. Full 3D sculpted US Navy Chief Petty Officer challenge coin. Skull wearing the CPO combination cover with USN anchor insignia. A memento mori rooted in Goat Locker tradition – the Navy’s century-old Chief’s Mess culture, passed down through pinning ceremonies and earned through the Season. Released May 2021 by an independent military-heritage designer. Original run: exactly 100 per colorway across five finishes – 500 total, worldwide. Parting with this piece from my collection. Never carried, never handled, stored in original packaging since release. Released: May 2021. Size: 3 in x 2.38 in. Thickness: Full 3D sculpted. Weight: 9.35 oz. Material: Zinc alloy. Finish: Antique Brass. Original run: 100 per colorway · 500 total across five finishes. Condition: New / NOS / original packaging. One available at this listing.