A crown cap having a clasp permanently attached to a top wall of the crown cap. The crown cap has a top wall having a substantially planar surface, a depending peripheral flange, the flange having a plurality of ribs and a plurality of webs interconnecting the ribs, and a clasp permanently attached to the surface of the top wall wherein the clasp attached to the top wall forms an opening through which material can be passed to secure the crown cap to an item.