>>57919551
>How do you even make sure of this?
By looking at the 9 characters on the back. The first 4 make up the game code, in this case APAJ, the 5th character is an N, 6th character is the revision number; 0 should be JP DP 1.0


Pic related is one you wouldn't want. >>57919418 shows a 1.0 code