Summoned Skull Sample promotional card

Introduction
Before the release of any kind of item, the producer makes some examples (Samples) of it, just like a try to see if it works or it needs further changes for the public distribution. This promo was one of those Samples that should have been destroyed or stored away by Upperdeck, instead it was distributed among UDE members. The sample was released as the example of the Summoned Skull in the Structure Deck: Yugi.

North-America
SDY-004 - Summoned Skull (Common)