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Challengers of the Unknown #16
	DC Comics, 10-11/60

Bob Brown cover and art		Full page ad for Justice League of
		America #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
1. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	1	9.20	July 01, 2001						1
2. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	1	9.20	January 27, 2002						1
3. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	2	9.20	July 17, 2003						2
4. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	2	9.20	January 08, 2004						2
5. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	5	7.18	July 12, 2004						2						1	1		1
6. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	5	7.18	December 16, 2004						2						1	1		1
7. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	6	7.40	July 07, 2005						2		1				1	1		1
8. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	6	7.40	January 27, 2006						2		1				1	1		1
9. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	6	7.40	June 20, 2006						2		1				1	1		1
10. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	6	7.40	January 10, 2007						2		1				1	1		1
11. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	6	7.40	July 05, 2007						2		1				1	1		1
12. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	7	7.63	January 09, 2008						2	1	1				1	1		1
13. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	8	7.68	July 01, 2008						2	1	1	1			1	1		1
14. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	9	7.66	January 13, 2009						2	1	1	1	1		1	1		1
15. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	9	7.66	June 24, 2009						2	1	1	1	1		1	1		1
16. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	9	7.66	December 15, 2009						2	1	1	1	1		1	1		1
17. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	11	7.63	June 14, 2010						2	2	1	1	1		1	2		1
18. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	12	7.58	December 27, 2010						2	2	1	1	1	1	1	2		1
19. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	13	7.61	June 27, 2011						2	2	1	2	1	1	1	2		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 16 (10-11/60, DC Comics)	Universal	13	7.61	January 02, 2012						2	2	1	2	1	1	1	2		1
21. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	14	7.71	July 02, 2012						2	3	1	2	1	1	1	2		1
22. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	15	7.73	December 31, 2012						2	3	1	3	1	1	1	2		1
23. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	17	7.82	June 22, 2013						2	4	1	4	1	1	1	2		1
24. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	18	7.66	December 31, 2013						2	4	1	4	1	1	1	2		2
25. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	18	7.66	July 01, 2014						2	4	1	4	1	1	1	2		2
26. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	18	7.66	December 30, 2014						2	4	1	4	1	1	1	2		2
27. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	18	7.66	June 30, 2015						2	4	1	4	1	1	1	2		2
28. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	18	7.66	December 29, 2015						2	4	1	4	1	1	1	2		2
29. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	18	7.66	June 28, 2016						2	4	1	4	1	1	1	2		2
30. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	18	7.66	December 27, 2016						2	4	1	4	1	1	1	2		2
31. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	19	7.55	June 27, 2017						2	4	1	4	1	1	1	2	1	2
32. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	19	7.55	January 02, 2018						2	4	1	4	1	1	1	2	1	2
33. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	19	7.55	July 03, 2018						2	4	1	4	1	1	1	2	1	2
34. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	21	7.57	January 01, 2019						2	4	2	4	1	2	1	2	1	2
35. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	22	7.45	July 02, 2019						2	4	2	4	1	2	1	2	1	3
36. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	23	7.52	December 31, 2019						2	5	2	4	1	2	1	2	1	3
37. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	23	7.52	June 30, 2020						2	5	2	4	1	2	1	2	1	3
38. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	23	7.52	December 29, 2020						2	5	2	4	1	2	1	2	1	3
39. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	24	7.52	June 29, 2021						2	5	2	4	2	2	1	2	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
40. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	25	7.59	December 28, 2021					1	2	5	2	4	2	2	1	2	1	3
41. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	25	7.59	June 28, 2022					1	2	5	2	4	2	2	1	2	1	3
42. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	29	7.66	December 27, 2022					2	2	5	3	4	3	3	1	2	1	3
43. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	29	7.66	June 27, 2023					2	2	5	3	4	3	3	1	2	1	3
44. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	30	7.64	December 31, 2023					2	2	5	3	4	3	4	1	2	1	3
45. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	35	7.48	August 12, 2025					2	2	6	4	4	3	4	3	2	1	3						1
46. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	35	7.48	August 19, 2025					2	2	6	4	4	3	4	3	2	1	3						1
47. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	32	7.43	August 26, 2025					2	2	5	4	4	1	4	3	2	1	3						1
48. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	32	7.43	September 02, 2025					2	2	5	4	4	1	4	3	2	1	3						1
49. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	35	7.48	September 09, 2025					2	2	6	4	4	3	4	3	2	1	3						1
50. Challengers of the Unknown 16 (10-11/60, DC Comics)	Universal	36	7.45	September 16, 2025					2	2	6	4	4	3	4	4	2	1	3						1

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Used with permission of CGC since 2003. Data is from July 01, 2001 to September 16, 2025.
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