New US Navy Challenge Coin to commemorate retirement. The coin is symbolic representation of military retiree ID card. The coin is the actual size of military ID 3.37" x .2.12". The coin is 3mm thick. The front and back our 3D die-cast impressions on front and back. Highlights:-Date of Expiration is INDEF or Indefinite -Signature is that of John Paul Jones considered to be the father of the U.S. Navy-Detailed U.S. Navy and U.S. Armed Forces logos-John F. Kennedy's famous Navy quote is from his remarks at the U.S. Naval Academy on August 1, 1963.-Navy's iconic motto "It's Not Just a Job, It's an Adventure".-Last 6 digits of the DOD ID Number, 466289, represent GO NAVY. -Date of Issue is Navy's birthday, October 13, 1775. This would make a great retirement gift.