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Challengers of the Unknown #31
	DC Comics, 4-5/63

Bob Brown cover and art		Origin of the Challengers retold.

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 31 (4-5/63, DC Comics)	Universal	2	6.85	July 01, 2001						1										1
2. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	3	7.07	January 27, 2002						1				1						1
3. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	5	7.92	July 17, 2003					1	1	1			1						1
4. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	5	7.92	January 08, 2004					1	1	1			1						1
5. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	5	7.92	July 12, 2004					1	1	1			1						1
6. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	5	7.92	December 16, 2004					1	1	1			1						1
7. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	5	7.92	July 07, 2005					1	1	1			1						1
8. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	5	7.92	January 27, 2006					1	1	1			1						1
9. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	5	7.92	June 20, 2006					1	1	1			1						1
10. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	5	7.92	January 10, 2007					1	1	1			1						1
11. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	5	7.92	July 05, 2007					1	1	1			1						1
12. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	5	7.92	January 09, 2008					1	1	1			1						1
13. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	5	7.92	July 01, 2008					1	1	1			1						1
14. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	5	7.92	January 13, 2009					1	1	1			1						1
15. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	5	7.92	June 24, 2009					1	1	1			1						1
16. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	6	8.17	December 15, 2009					2	1	1			1						1
17. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	6	8.17	June 14, 2010					2	1	1			1						1
18. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	6	8.17	December 27, 2010					2	1	1			1						1
19. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	7	8.31	June 27, 2011					2	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
20. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	7	8.31	January 02, 2012					2	2	1			1						1
21. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	7	8.31	July 02, 2012					2	2	1			1						1
22. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	7	8.31	December 31, 2012					2	2	1			1						1
23. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	7	8.31	June 22, 2013					2	2	1			1						1
24. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	7	8.31	December 31, 2013					2	2	1			1						1
25. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	9	8.21	July 01, 2014					2	3	1			1		1				1
26. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	9	8.21	December 30, 2014					2	3	1			1		1				1
27. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	9	8.21	June 30, 2015					2	3	1			1		1				1
28. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	9	8.21	December 29, 2015					2	3	1			1		1				1
29. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	9	8.21	June 28, 2016					2	3	1			1		1				1
30. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	9	8.21	December 27, 2016					2	3	1			1		1				1
31. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	9	8.21	June 27, 2017					2	3	1			1		1				1
32. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	9	8.21	January 02, 2018					2	3	1			1		1				1
33. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	11	8.17	July 03, 2018					2	3	1		2	1		1				1
34. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	11	8.17	January 01, 2019					2	3	1		2	1		1				1
35. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	11	8.17	July 02, 2019					2	3	1		2	1		1				1
36. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	12	7.87	December 31, 2019					2	3	1		2	1		1				2
37. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	13	7.84	June 30, 2020					2	3	1		2	2		1				2
38. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	13	7.84	December 29, 2020					2	3	1		2	2		1				2
39. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	13	7.84	June 29, 2021					2	3	1		2	2		1				2
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 31 (4-5/63, DC Comics)	Universal	14	7.78	December 28, 2021					2	3	1		2	2	1	1				2
41. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	14	7.78	June 28, 2022					2	3	1		2	2	1	1				2
42. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	14	7.78	December 27, 2022					2	3	1		2	2	1	1				2
43. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	14	7.78	June 27, 2023					2	3	1		2	2	1	1				2
44. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	14	7.78	December 31, 2023					2	3	1		2	2	1	1				2
45. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	14	7.78	June 17, 2025					2	3	1		2	2	1	1				2
46. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	14	7.78	June 24, 2025					2	3	1		2	2	1	1				2
47. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	14	7.78	July 01, 2025					2	3	1		2	2	1	1				2
48. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	14	7.78	July 15, 2025					2	3	1		2	2	1	1				2
49. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	14	7.78	July 22, 2025					2	3	1		2	2	1	1				2
50. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	14	7.78	July 29, 2025					2	3	1		2	2	1	1				2
51. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	14	7.78	August 05, 2025					2	3	1		2	2	1	1				2
52. Challengers of the Unknown 31 (4-5/63, DC Comics)	Universal	14	7.78	August 12, 2025					2	3	1		2	2	1	1				2

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