Helicopter Combat Support Squadron FOUR HC-4 Sigonella Italy Black Stallions Silver Navy Challenge Coin Key Chain with a mission of cryptology

with a mission of cryptology and communications security

the USMC conducted a thorough evaluation of its security forces during the mid-eighties

Type 1 was the initial coin made

This unit was inactivated 1 July 1945 in China

Helicopter Combat Support Squadron FOUR HC-4 Sigonella Italy Black Stallions Silver Navy Challenge Coin Key Chain with a mission of cryptologyThis coin is approximately 1 1 2 inches in diameter and in good shape. It is marked . 999 Fine 1 once Silver. Helicopter Combat Support Squadron FOUR (HC 4) was a United States Navy helicopter squadron based at Naval Air Station Norfolk, Virginia. Nicknamed the "Black Stallions", they flew the Sikorsky CH 53E Super Stallion and MH 53E Sea Dragon[2] helicopters.[3] The Black Stallions were established on May 6, 1983 as a heavy lift combat support