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Challengers of the Unknown #20
	DC Comics, 6-7/61

Bob Brown cover and art		Multi-Man appearance.

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. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	1	9.00	July 01, 2001							1
2. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	1	9.00	January 27, 2002							1
3. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	5	7.80	July 17, 2003							1		1	2	1
4. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	5	7.80	January 08, 2004							1		1	2	1
5. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	5	7.80	July 12, 2004							1		1	2	1
6. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	5	7.80	December 16, 2004							1		1	2	1
7. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	5	7.80	July 07, 2005							1		1	2	1
8. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	5	7.80	January 27, 2006							1		1	2	1
9. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	5	7.80	June 20, 2006							1		1	2	1
10. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	5	7.80	January 10, 2007							1		1	2	1
11. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	5	7.80	July 05, 2007							1		1	2	1
12. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	5	7.80	January 09, 2008							1		1	2	1
13. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	5	7.80	July 01, 2008							1		1	2	1
14. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	6	7.83	January 13, 2009							1		2	2	1
15. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	6	7.83	June 24, 2009							1		2	2	1
16. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	7	8.06	December 15, 2009					1		1		2	2	1
17. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	7	8.06	June 14, 2010					1		1		2	2	1
18. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	9	7.93	December 27, 2010					1		1		2	4	1
19. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	11	8.16	June 27, 2011					2		2		2	4	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
20. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	11	8.16	January 02, 2012					2		2		2	4	1
21. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	12	8.27	July 02, 2012					3		2		2	4	1
22. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	14	8.09	December 31, 2012					3		2	1	2	4	1			1
23. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	15	8.08	June 22, 2013					3		2	1	3	4	1			1
24. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	15	8.08	December 31, 2013					3		2	1	3	4	1			1
25. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	15	8.08	July 01, 2014					3		2	1	3	4	1			1
26. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	15	8.08	December 30, 2014					3		2	1	3	4	1			1
27. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	15	8.08	June 30, 2015					3		2	1	3	4	1			1
28. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	17	7.98	December 29, 2015					3		2	1	3	5	2			1
29. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	17	7.98	June 28, 2016					3		2	1	3	5	2			1
30. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	17	7.98	December 27, 2016					3		2	1	3	5	2			1
31. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	17	7.98	June 27, 2017					3		2	1	3	5	2			1
32. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	17	7.98	January 02, 2018					3		2	1	3	5	2			1
33. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	17	7.98	July 03, 2018					3		2	1	3	5	2			1
34. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	18	7.98	January 01, 2019					3		2	1	4	5	2			1
35. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	19	8.07	July 02, 2019				1	3		2	1	4	5	2			1
36. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	20	7.82	December 31, 2019				1	3		2	1	4	5	2			1					1
37. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	20	7.82	June 30, 2020				1	3		2	1	4	5	2			1					1
38. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	20	7.82	December 29, 2020				1	3		2	1	4	5	2			1					1
39. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	21	7.68	June 29, 2021				1	3		2	1	4	5	2			1	1				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. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	22	7.77	December 28, 2021				2	3		2	1	4	5	2			1	1				1
41. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	22	7.77	June 28, 2022				2	3		2	1	4	5	2			1	1				1
42. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	26	7.57	December 27, 2022				2	3		3	1	5	5	2			2	1			1	1
43. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	26	7.57	June 27, 2023				2	3		3	1	5	5	2			2	1			1	1
44. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	26	7.57	December 31, 2023				2	3		3	1	5	5	2			2	1			1	1
45. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	28	7.59	June 17, 2025				2	3		3	1	6	6	2			2	1			1	1
46. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	28	7.59	June 24, 2025				2	3		3	1	6	6	2			2	1			1	1
47. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	28	7.59	July 01, 2025				2	3		3	1	6	6	2			2	1			1	1
48. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	28	7.59	July 15, 2025				2	3		3	1	6	6	2			2	1			1	1
49. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	28	7.59	July 22, 2025				2	3		3	1	6	6	2			2	1			1	1
50. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	29	7.65	July 29, 2025				2	4		3	1	6	6	2			2	1			1	1
51. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	29	7.65	August 05, 2025				2	4		3	1	6	6	2			2	1			1	1
52. Challengers of the Unknown 20 (6-7/61, DC Comics)	Universal	29	7.65	August 12, 2025				2	4		3	1	6	6	2			2	1			1	1

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"CGC Census Analysis" is provided by Greg Holland (©2003-2025).
Data is sourced from the public CGC census (© Certified Guaranty Company, LLC.)
Used with permission of CGC since 2003. Data is from July 01, 2001 to August 12, 2025.
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