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Challengers of the Unknown #56
	DC Comics, 6-7/67

Arnold Drake story		Origin of Ace Morgan.
Bob Brown cover and 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. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	1	9.40	July 01, 2001					1
2. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	1	9.40	January 27, 2002					1
3. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	2	9.30	July 17, 2003					1	1
4. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	3	9.33	January 08, 2004					2	1
5. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	3	9.33	July 12, 2004					2	1
6. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	3	9.33	December 16, 2004					2	1
7. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	3	9.33	July 07, 2005					2	1
8. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	3	9.33	January 27, 2006					2	1
9. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	3	9.33	June 20, 2006					2	1
10. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	3	9.33	January 10, 2007					2	1
11. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	4	9.35	July 05, 2007					3	1
12. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	5	9.36	January 09, 2008					4	1
13. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	5	9.36	July 01, 2008					4	1
14. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	5	9.36	January 13, 2009					4	1
15. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	5	9.36	June 24, 2009					4	1
16. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	5	9.36	December 15, 2009					4	1
17. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	5	9.36	June 14, 2010					4	1
18. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	5	9.36	December 27, 2010					4	1
19. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	5	9.36	June 27, 2011					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 56 (6-7/67, DC Comics)	Universal	5	9.36	January 02, 2012					4	1
21. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	7	9.27	July 02, 2012				1	4	1		1
22. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	7	9.27	December 31, 2012				1	4	1		1
23. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	8	9.24	June 22, 2013				1	4	1	1	1
24. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	10	9.29	December 31, 2013				2	5	1	1	1
25. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	10	9.29	July 01, 2014				2	5	1	1	1
26. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	10	9.29	December 30, 2014				2	5	1	1	1
27. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	10	9.29	June 30, 2015				2	5	1	1	1
28. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	10	9.29	December 29, 2015				2	5	1	1	1
29. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	10	9.29	June 28, 2016				2	5	1	1	1
30. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	10	9.29	December 27, 2016				2	5	1	1	1
31. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	10	9.29	June 27, 2017				2	5	1	1	1
32. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	10	9.29	January 02, 2018				2	5	1	1	1
33. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	10	9.29	July 03, 2018				2	5	1	1	1
34. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	10	9.29	January 01, 2019				2	5	1	1	1
35. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	10	9.29	July 02, 2019				2	5	1	1	1
36. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	10	9.29	December 31, 2019				2	5	1	1	1
37. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	12	8.87	June 30, 2020				2	5	1	1	1			1	1
38. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	12	8.87	December 29, 2020				2	5	1	1	1			1	1
39. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	12	8.87	June 29, 2021				2	5	1	1	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 56 (6-7/67, DC Comics)	Universal	12	8.87	December 28, 2021				2	5	1	1	1			1	1
41. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	12	8.87	June 28, 2022				2	5	1	1	1			1	1
42. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	13	8.89	December 27, 2022				2	5	2	1	1			1	1
43. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	14	8.90	June 27, 2023				2	5	2	2	1			1	1
44. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	15	8.93	December 31, 2023				2	6	2	2	1			1	1
45. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	16	8.98	June 17, 2025			1	1	7	2	2	1			1	1
46. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	16	8.98	June 24, 2025			1	1	7	2	2	1			1	1
47. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	16	8.98	July 01, 2025			1	1	7	2	2	1			1	1
48. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	16	8.98	July 15, 2025			1	1	7	2	2	1			1	1
49. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	16	8.98	July 22, 2025			1	1	7	2	2	1			1	1
50. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	16	8.98	July 29, 2025			1	1	7	2	2	1			1	1
51. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	17	9.01	August 05, 2025			1	2	7	2	2	1			1	1
52. Challengers of the Unknown 56 (6-7/67, DC Comics)	Universal	17	9.01	August 12, 2025			1	2	7	2	2	1			1	1
53. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	July 01, 2001						1
54. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	January 27, 2002						1
55. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	July 17, 2003						1
56. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	January 08, 2004						1
57. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	July 12, 2004						1
58. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	December 16, 2004						1
59. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	July 07, 2005						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
60. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	January 27, 2006						1
61. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	June 20, 2006						1
62. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	January 10, 2007						1
63. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	July 05, 2007						1
64. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	January 09, 2008						1
65. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	July 01, 2008						1
66. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	January 13, 2009						1
67. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	June 24, 2009						1
68. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	December 15, 2009						1
69. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	June 14, 2010						1
70. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	December 27, 2010						1
71. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	June 27, 2011						1
72. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	January 02, 2012						1
73. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	July 02, 2012						1
74. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	December 31, 2012						1
75. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	June 22, 2013						1
76. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	December 31, 2013						1
77. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	July 01, 2014						1
78. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	December 30, 2014						1
79. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	June 30, 2015						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
80. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	December 29, 2015						1
81. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	June 28, 2016						1
82. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	December 27, 2016						1
83. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	June 27, 2017						1
84. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	January 02, 2018						1
85. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	July 03, 2018						1
86. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	January 01, 2019						1
87. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	July 02, 2019						1
88. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	December 31, 2019						1
89. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	June 30, 2020						1
90. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	December 29, 2020						1
91. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	June 29, 2021						1
92. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	December 28, 2021						1
93. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	June 28, 2022						1
94. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	December 27, 2022						1
95. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	June 27, 2023						1
96. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	December 31, 2023						1
97. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	June 17, 2025						1
98. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	June 24, 2025						1
99. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	July 01, 2025						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
100. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	July 15, 2025						1
101. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	July 22, 2025						1
102. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	July 29, 2025						1
103. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	August 05, 2025						1
104. Challengers of the Unknown 56 (6-7/67, DC Comics)	Restored	1	9.20	August 12, 2025						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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