1951 with two SEY-marked magazines by Seymour Products Co. These were fabricated at the very end of WWII and immediately afterwards and were used extensively in the Korean War through the Vietnam War. They have the correct hold-bolt open followers, Type 5 base plates and show moderate user wear (see photos). The fifth photo shows the feature that all real USGI split backs have and the fakes and reproductions do not.I'm tossing in two post WWII USGI rubber dust caps. Check out my other listings for more M1 Carbine accessories. The item "RARE Korean War USGI M1 Carbine T4 magazine pouch & 2 SEY Seymour 10-rd clips" is in sale since Sunday, June 17, 2018. This item is in the category "Collectibles\Militaria\Korea (1950-53)\Original Period Items". The seller is "dnikkor" and is located in Kansas City, Kansas. This item can be shipped to United States.