"Highly detailed 40mm pirate challenge coin design, antique brass style with deep relief engraving, obverse side features a fierce skull and crossed bones Jolly Roger emblem, traditional pirate flag style, ornate border with rope and anchor motifs, weathered metallic texture, high contrast for laser engraving, circular medallion composition, black background --ar 1:1 --stylize 250 --v 6" in a round image