Collecibles!

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Across
  1. 2. Type of currency
  2. 5. Goes on a letter to somebody
  3. 7. Gotta catch em all!
  4. 8. COllecting Geology!
  5. 9. Spinning music
Down
  1. 1. Figure with a big head
  2. 3. On your head
  3. 4. overprinting in the 90s
  4. 5. On your feet
  5. 6. Spiderman, Superman...