insignia

noun3

1. •
   A patch or other object that indicates a person's official or military rank, or membership in a group or organization.
2. •
   A symbol or token of personal power, status, or office, or of an official body of government or jurisdiction.

   • The former Protector tendered him the oaths, and presented him with the insignia of office, performing the ceremonies of installation. — 1826
3. •
   (figurative) A mark or token by which anything is known.

   • Rule 23: “The stress of love makes it hard to eat and sleep.” To these empirical laws we can add the various other insignia of love. — 2006