FiGPiN Dr. Stone Senku (#486) Collectible Pin Manufacturer: FiGPiN Number: 486 Cast zinc alloy inlaid with hard synthetic color enamel. Finished with an electroplated nickel coating. Stands up with a Patented FiGPiN Rubber backer or FiGPiN Action Post. Encased in a museum-quality, clear poly-carbonate display box with a black ABS plastic base. Size: approximately 3" tall (76.2mm) 3/32" thick (2.0mm) All FiGPiNs include a laser engraved, alphanumeric serial number on the back, making every single one uniquely yours.