With the introduction of the Private (E-2) Rank in 1948, the Corporal (E-3) Rank - 2 Chevrons was moved up and became an E-4 Rank where it has stayed until this day. These Corporal Ranks are from the 1950's.
An E-4 Rank
Material: Embroidery on Twill
Condition: New - View Photos
Timeperiod: 1950's 
Sold as a pair
Colors: Green on Navy Blue