Hey, I never noticed they are different patterns for the 1st and 2nd Models!! In fact, I had the 1st Model trousers hung with a 2nd Model jacket. Now fixed
I really have to look more closely at things I buy
The 1st Model has the round Korean badge sewn onto the arm. The 2nd Model has a rectangular velcro patch. There are also minor tailoring differences, the most significant is the 2nd Model's interior shoulder reinforcement.