This is a great looking California Highway Patrol challenge coin. Coin has reeded edges and is about 1 9/16" in diameter. All details are raised lettering and gold plated. Reverse side is St Michael the Protector, Patron Saint of Law Enforcement. Coin is contained in an acrylic air tight holder. The California Highway Patrol (CHP) is a law enforcement agency of the U S state of California. The CHP has patrol jurisdiction over all California highways and can also act as the state police. The California State Legislature established the California Highway Patrol as a branch of the Division of Motor Vehicles in the Department of Public Works, with legislation signed by Governor C.C. Young on August 14, 1929. It was reestablished as a separate department by Governor Earl Warren in 1947. The CHP gradually assumed increased responsibility beyond the enforcement of the State Vehicle Act and eventually merged with the smaller California State Police in 1995. It is currently organized as part of the California State Transportation Agency. In addition to its highway patrol duties, the CHP also provides other services including protecting state buildings and facilities (most notably the California State Capitol) and bodyguarding state officials. The CHP also works with municipal law enforcement agencies, providing assistance in investigations, patrol, and other aspects of law enforcement.