Deck has two of the same card? Is this

A standard RWS deck has 78 unique cards — no duplicates. So seeing two of the same card means one of three things, depending on what you saw:

• Two pulls in one reading — random draws can repeat. With 78 cards and a small spread, it's rare but possible. Nothing mystical; just the math.
• A non-standard deck — some decks ship a79th "extra" (a clone, a wildcard, or an artist-signed bonus) on top of the standard 78. Common in indie or Kickstarter prints.
• A different tradition's deck — Tarot de Marseille, Thoth, and some regional decks can have repeated titles or paired majors. Worth checking the little white booklet that came in the box.

The quickest check: count the cards in your physical deck. If it's 78, the repeat was in the draw. If it's 79+, your deck is the source.

Want me to walk through what a same-card-in-one-spread usually means, or were you asking about the deck itself?