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Detective Comics #21
Sketch Cover	DC Comics, 8/13

John Layman stories, Jason Fabok cover
Scot Eaton, Jamie Mendoza &
Andy Clarke art

Books	CGC Label	CGC Total	Avg. Grade	Census Date	10	9.9	9.8	9.6	9.4	9.2	9.0	8.5	8.0	7.5	7.0	6.5	6.0	5.5	5.0	4.5	4.0	3.5	3.0	2.5	2.0	1.8	1.5	1.0	0.5
1. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	2	9.85	December 31, 2013		1	1
2. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	3	9.83	July 01, 2014		1	2
3. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	3	9.83	December 30, 2014		1	2
4. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	3	9.83	June 30, 2015		1	2
5. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	3	9.83	December 29, 2015		1	2
6. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	3	9.83	June 28, 2016		1	2
7. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	3	9.83	December 27, 2016		1	2
8. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	3	9.83	June 27, 2017		1	2
9. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	3	9.83	January 02, 2018		1	2
10. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	3	9.83	July 03, 2018		1	2
11. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	3	9.83	January 01, 2019		1	2
12. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	3	9.83	July 02, 2019		1	2
13. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	3	9.83	December 31, 2019		1	2
14. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	3	9.83	June 30, 2020		1	2
15. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	3	9.83	December 29, 2020		1	2
16. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	3	9.83	June 29, 2021		1	2
17. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	3	9.83	December 28, 2021		1	2
18. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	4	9.83	June 28, 2022		1	3
19. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	4	9.83	December 27, 2022		1	3
Books	CGC Label	CGC Total	Avg. Grade	Census Date	10	9.9	9.8	9.6	9.4	9.2	9.0	8.5	8.0	7.5	7.0	6.5	6.0	5.5	5.0	4.5	4.0	3.5	3.0	2.5	2.0	1.8	1.5	1.0	0.5
20. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	4	9.83	June 27, 2023		1	3
21. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	5	9.82	December 31, 2023		1	4
22. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	5	9.82	June 24, 2025		1	4
23. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	5	9.82	July 01, 2025		1	4
24. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	5	9.82	July 15, 2025		1	4
25. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	5	9.82	July 22, 2025		1	4
26. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	5	9.82	July 29, 2025		1	4
27. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	5	9.82	August 05, 2025		1	4
28. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	5	9.82	August 12, 2025		1	4
29. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Universal	5	9.82	August 19, 2025		1	4
30. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	December 31, 2013			1
31. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	July 01, 2014			1
32. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	December 30, 2014			1
33. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	June 30, 2015			1
34. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	December 29, 2015			1
35. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	June 28, 2016			1
36. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	December 27, 2016			1
37. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	June 27, 2017			1
38. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	January 02, 2018			1
39. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	July 03, 2018			1
Books	CGC Label	CGC Total	Avg. Grade	Census Date	10	9.9	9.8	9.6	9.4	9.2	9.0	8.5	8.0	7.5	7.0	6.5	6.0	5.5	5.0	4.5	4.0	3.5	3.0	2.5	2.0	1.8	1.5	1.0	0.5
40. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	January 01, 2019			1
41. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	July 02, 2019			1
42. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	December 31, 2019			1
43. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	June 30, 2020			1
44. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	December 29, 2020			1
45. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	June 29, 2021			1
46. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	December 28, 2021			1
47. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	June 28, 2022			1
48. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	December 27, 2022			1
49. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	June 27, 2023			1
50. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	December 31, 2023			1
51. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	June 24, 2025			1
52. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	July 01, 2025			1
53. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	July 15, 2025			1
54. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	July 22, 2025			1
55. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	July 29, 2025			1
56. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	August 05, 2025			1
57. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	August 12, 2025			1
58. Detective Comics 21 Sketch Cover (8/13, DC Comics)	Signature	1	9.80	August 19, 2025			1

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