20 bullets.

Because the platinum card is relatively rare, it is difficult to get it at the beginning, basically at 19 or 20 bullets.

The first Ultraman card to appear signed is the UR card from the first legendary version. The front of the card is engraved with a golden Ultraman, and the number code in the lower right corner is SER. From the first legendary version As of the eighth edition of the Legend, there are 28 UR signature cards in one set. They are all out of print now and have high collection value.