Are the 'Sample' cards from the Gencon decks legal for tournament play?

Ruling: No, the Sample cards from the Gencon decks are not legal for tournament play.

Nuances:

• The cards have the word "SAMPLE" printed on them, which disqualifies them from tournament use
• The cards do have proper set numbers and the same text and art as regular versions
• The card stock may be different from regular cards
• This is distinct from alters, which are legal