This USMC Serge Green Garrison Cap is a rare and valuable item for collectors of militaria. Made in the United States in 1974, it features an EGA device and is engraved with the serial number 6 5/8. The cap is perfect for anyone interested in the history of the USMC Marine Corps during the Vietnam War. It is an original period item and a great addition to any collection. The cap is designed for enlisted personnel and is a unique piece of history. It is perfect for anyone interested in the USMC Marine Corps, Vietnam, or militaria in general. This item is a must-have for collectors and enthusiasts alike.