Games Workshop (Citadel) Warhammer Fantasy Chaos Familiars (Oldhammer, 1991) 

13 different models:
  1. Jester
  2. Skeletal
  3. Iron Clad Imp
  4. Slaanesh
  5. Scroll Bearer
  6. Tzeentch
  7. Mannequin
  8. Jack 'O' Lantern
  9. Imp 3
  10. Bird Thing
  11. Beastling
  12. Armoured Mite
  13. Lune
Source: http://www.solegends.com/citcat1991b/cat1991bp276rcchaosfamiliars-01.htm