USA : Group of Nine 1957-pattern Army NCO rank-armbadges.

Machine-embroidered in yellow-gold on olive-green.as introduced in 1957 for the following ranks : a).First Sergeant b) Master Sergeant c) Master Sergeant (smaller type) d) Sergeant 1st Class e) Sergeant f) Corporal g) Private 1st Class h) Private E-2 pay-grade i) Specialist 1st Class Probably unworn and all in excellent condition. This pattern existed throughout the Vietnam era.