South Korean Field Jacket Insignia Question

[us82bravo]

Received this field jacket from a 'picker' friend.  No information for the jacket.

 

I have checked several on-line sources to determine the rank insignia configuration and have not found anything like it.  Any information or suggested reference is appreciated.

 

 

 

 

 

Thank you.

 

Larry

 

[Mr. Bushido]

Emblem on the chest represents the entire Korean military.

Letters are "for military use".

 

Rank insignia was used only for about 1970s〜80s.
The class is "상사=Master Sergeant".

 

Based on the above, the year of manufacture of the jacket makes sense.

 

However, I am baffled that the rank of the jacket is NCO, even though it says it's for officers.

[us82bravo]

 

Mr. Bushido,

 

Thank you for your response and information about this jacket.  It is appreciated.

 

Larry