Cryptic crossword

ACROSS

1. Spheres or balls lose everything (4) 3. He does his running on the quiet (8) 9. Organise a gay reel with zest (7) 10. Copy wrongly (5) 11. How detectives may collaborate to catch counterfeiters? (7,5) 13. Trifling affront (6) 15. Put off one’s retirement (4,2) 17. Work in harmony, as rowers should (4,8) 20. Greets in stony fashion? (5) 21. Appreciative watcher gives tongue! (7) 22. Encouraging applause (8) 23. To a doctor it’s grave (4)

DOWN

1. Showed that one’s judgement as a producer had become clouded? (8) 2. Possibly be a fool being brought up as a princess (5) 4. It’s a crime when he has a number after one month (6) 5. There’s a lot to be said for having it (4,2,3,3) 6. One takes something for it (7) 7. Lines, we hear, of eggs (4) 8. It will be a blow to take this test - and fail! (12) 12. Joint description of Eve’s origin (5,3) 14. Useless, until changed inside that is (7) 16. He has an enormous bill to face (6) 18. Animal in hardship popularly abbreviated (5) 19. Elegant style in which ice cream is served (4)