i just got 3 copy of this card today. i play this game about 3 month. got one from stage 33 after more than 100 duel SD because i didnt want to move up, but i got boring and move to stage 35 just to reset farm SD for Espa Rosa, and today i got 2 copy.
just an auto duel
first one i got from the SD name David(i use Mokuba Kaiba) ( not GX yugioh)
second one from the boy, forgot which one ( i use ARkana) ( not from GX)
Hope this help.
Stage 51 and i got 2 in one day after not getting any. First time was just an auto duel and second time i forgot to change off unhappy girl farming deck and "farmed" an SD, got ~6000 points and dropped it.