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Challengers of the Unknown #37
	DC Comics, 4-5/64

Arnold Drake and Ed Herron stories		Full page ad for Hawkman #1
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 37 (4-5/64, DC Comics)	Universal	2	8.10	July 01, 2001						1					1
2. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	2	8.10	January 27, 2002						1					1
3. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	4	8.18	July 17, 2003						1		1	1		1
4. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	4	8.18	January 08, 2004						1		1	1		1
5. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	4	8.18	July 12, 2004						1		1	1		1
6. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	4	8.18	December 16, 2004						1		1	1		1
7. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	4	8.18	July 07, 2005						1		1	1		1
8. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	4	8.18	January 27, 2006						1		1	1		1
9. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	4	8.18	June 20, 2006						1		1	1		1
10. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	4	8.18	January 10, 2007						1		1	1		1
11. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	4	8.18	July 05, 2007						1		1	1		1
12. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	4	8.18	January 09, 2008						1		1	1		1
13. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	4	8.18	July 01, 2008						1		1	1		1
14. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	4	8.18	January 13, 2009						1		1	1		1
15. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	4	8.18	June 24, 2009						1		1	1		1
16. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	4	8.18	December 15, 2009						1		1	1		1
17. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	4	8.18	June 14, 2010						1		1	1		1
18. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	4	8.18	December 27, 2010						1		1	1		1
19. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	6	8.52	June 27, 2011						3		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 37 (4-5/64, DC Comics)	Universal	6	8.52	January 02, 2012						3		1	1		1
21. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	6	8.52	July 02, 2012						3		1	1		1
22. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	6	8.52	December 31, 2012						3		1	1		1
23. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	6	8.52	June 22, 2013						3		1	1		1
24. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	6	8.52	December 31, 2013						3		1	1		1
25. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	6	8.52	July 01, 2014						3		1	1		1
26. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	6	8.52	December 30, 2014						3		1	1		1
27. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	7	8.51	June 30, 2015						3		2	1		1
28. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	7	8.51	December 29, 2015						3		2	1		1
29. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	7	8.51	June 28, 2016						3		2	1		1
30. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	7	8.51	December 27, 2016						3		2	1		1
31. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	7	8.51	June 27, 2017						3		2	1		1
32. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	7	8.51	January 02, 2018						3		2	1		1
33. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	7	8.51	July 03, 2018						3		2	1		1
34. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	8	8.60	January 01, 2019						4		2	1		1
35. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	8	8.60	July 02, 2019						4		2	1		1
36. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	8	8.60	December 31, 2019						4		2	1		1
37. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	8	8.60	June 30, 2020						4		2	1		1
38. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	8	8.60	December 29, 2020						4		2	1		1
39. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	8	8.60	June 29, 2021						4		2	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 37 (4-5/64, DC Comics)	Universal	8	8.60	December 28, 2021						4		2	1		1
41. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	8	8.60	June 28, 2022						4		2	1		1
42. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	8	8.60	December 27, 2022						4		2	1		1
43. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	8	8.60	June 27, 2023						4		2	1		1
44. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	10	8.28	December 31, 2023						4		2	1	1	1	1
45. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	11	8.07	August 12, 2025						4		2	1	1	1	1	1
46. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	11	8.07	August 19, 2025						4		2	1	1	1	1	1
47. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	8	8.41	August 26, 2025						4		2		1			1
48. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	8	8.41	September 02, 2025						4		2		1			1
49. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	11	8.07	September 09, 2025						4		2	1	1	1	1	1
50. Challengers of the Unknown 37 (4-5/64, DC Comics)	Universal	11	8.07	September 16, 2025						4		2	1	1	1	1	1
51. Challengers of the Unknown 37 (4-5/64, DC Comics)	Restored	1	5.00	July 03, 2018															1
52. Challengers of the Unknown 37 (4-5/64, DC Comics)	Restored	1	5.00	January 01, 2019															1
53. Challengers of the Unknown 37 (4-5/64, DC Comics)	Restored	1	5.00	July 02, 2019															1
54. Challengers of the Unknown 37 (4-5/64, DC Comics)	Restored	1	5.00	December 31, 2019															1
55. Challengers of the Unknown 37 (4-5/64, DC Comics)	Restored	1	5.00	June 30, 2020															1
56. Challengers of the Unknown 37 (4-5/64, DC Comics)	Restored	1	5.00	December 29, 2020															1
57. Challengers of the Unknown 37 (4-5/64, DC Comics)	Restored	1	5.00	June 29, 2021															1
58. Challengers of the Unknown 37 (4-5/64, DC Comics)	Restored	1	5.00	December 28, 2021															1
59. Challengers of the Unknown 37 (4-5/64, DC Comics)	Restored	1	5.00	June 28, 2022															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 37 (4-5/64, DC Comics)	Restored	1	5.00	December 27, 2022															1
61. Challengers of the Unknown 37 (4-5/64, DC Comics)	Restored	1	5.00	June 27, 2023															1
62. Challengers of the Unknown 37 (4-5/64, DC Comics)	Restored	1	5.00	December 31, 2023															1
63. Challengers of the Unknown 37 (4-5/64, DC Comics)	Restored	1	5.00	August 12, 2025															1
64. Challengers of the Unknown 37 (4-5/64, DC Comics)	Restored	1	5.00	August 19, 2025															1
65. Challengers of the Unknown 37 (4-5/64, DC Comics)	Restored	1	5.00	August 26, 2025															1
66. Challengers of the Unknown 37 (4-5/64, DC Comics)	Restored	1	5.00	September 02, 2025															1
67. Challengers of the Unknown 37 (4-5/64, DC Comics)	Restored	1	5.00	September 09, 2025															1
68. Challengers of the Unknown 37 (4-5/64, DC Comics)	Restored	1	5.00	September 16, 2025															1
69. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	January 08, 2004				1
70. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	July 12, 2004				1
71. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	December 16, 2004				1
72. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	July 07, 2005				1
73. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	January 27, 2006				1
74. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	June 20, 2006				1
75. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	January 10, 2007				1
76. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	July 05, 2007				1
77. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	January 09, 2008				1
78. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	July 01, 2008				1
79. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	January 13, 2009				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 37 (4-5/64, DC Comics)	Qualified	1	9.60	June 24, 2009				1
81. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	December 15, 2009				1
82. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	June 14, 2010				1
83. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	December 27, 2010				1
84. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	June 27, 2011				1
85. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	January 02, 2012				1
86. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	July 02, 2012				1
87. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	December 31, 2012				1
88. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	June 22, 2013				1
89. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	December 31, 2013				1
90. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	July 01, 2014				1
91. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	December 30, 2014				1
92. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	June 30, 2015				1
93. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	December 29, 2015				1
94. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	June 28, 2016				1
95. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	December 27, 2016				1
96. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	June 27, 2017				1
97. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	January 02, 2018				1
98. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	July 03, 2018				1
99. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	January 01, 2019				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 37 (4-5/64, DC Comics)	Qualified	1	9.60	July 02, 2019				1
101. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	December 31, 2019				1
102. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	June 30, 2020				1
103. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	December 29, 2020				1
104. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	June 29, 2021				1
105. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	December 28, 2021				1
106. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	June 28, 2022				1
107. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	December 27, 2022				1
108. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	June 27, 2023				1
109. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	December 31, 2023				1
110. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	August 12, 2025				1
111. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	August 19, 2025				1
112. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	August 26, 2025				1
113. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	September 02, 2025				1
114. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	September 09, 2025				1
115. Challengers of the Unknown 37 (4-5/64, DC Comics)	Qualified	1	9.60	September 16, 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 September 16, 2025.
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