United Nations Command, South Korea patches

While this organization technically came into being in 1950, it seems like this insignia didn't come about until a bit later (August of 1957 according to Chris Aleck's "Authorized Shoulder Sleeve Insignia of the US Army").   Shown here are three different variations, probably all from the late 1950's or 1960's.   The left two are both Korean made, while the one on the right is an American made example.