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Adventures into the Unknown #21
	American Comics Group, 7/51

Paul Gattuso, Lin Streeter, Pete Riss,
Edvard Moritz and Charles Sultan art
Ken Bald cover

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. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	4	8.45	July 17, 2003				1		1				2
2. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	4	8.45	January 08, 2004				1		1				2
3. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	4	8.45	July 12, 2004				1		1				2
4. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	4	8.45	December 16, 2004				1		1				2
5. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	4	8.45	July 07, 2005				1		1				2
6. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	5	8.64	January 27, 2006				1	1	1				2
7. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	5	8.64	June 20, 2006				1	1	1				2
8. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	5	8.64	January 10, 2007				1	1	1				2
9. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	5	8.64	July 05, 2007				1	1	1				2
10. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	5	8.64	January 09, 2008				1	1	1				2
11. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	5	8.64	July 01, 2008				1	1	1				2
12. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	6	8.20	January 13, 2009				1	1	1				2			1
13. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	6	8.20	June 24, 2009				1	1	1				2			1
14. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	6	8.20	December 15, 2009				1	1	1				2			1
15. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	6	8.20	June 14, 2010				1	1	1				2			1
16. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	6	8.20	December 27, 2010				1	1	1				2			1
17. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	6	8.20	June 27, 2011				1	1	1				2			1
18. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	6	8.20	January 02, 2012				1	1	1				2			1
19. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	6	8.20	July 02, 2012				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. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	6	8.20	December 31, 2012				1	1	1				2			1
21. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	7	8.24	June 22, 2013				1	1	1		1		2			1
22. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	7	8.24	December 31, 2013				1	1	1		1		2			1
23. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	8	8.21	July 01, 2014				1	1	1		1	1	2			1
24. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	8	8.21	December 30, 2014				1	1	1		1	1	2			1
25. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	8	8.21	June 30, 2015				1	1	1		1	1	2			1
26. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	8	8.21	December 29, 2015				1	1	1		1	1	2			1
27. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	8	8.21	June 28, 2016				1	1	1		1	1	2			1
28. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	8	8.21	December 27, 2016				1	1	1		1	1	2			1
29. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	8	8.21	June 27, 2017				1	1	1		1	1	2			1
30. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	9	8.13	January 02, 2018				1	1	1		1	1	3			1
31. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	8	8.09	July 03, 2018				1	1	1			1	3			1
32. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	8	8.09	January 01, 2019				1	1	1			1	3			1
33. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	9	8.21	July 02, 2019				1	1	2			1	3			1
34. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	11	7.58	December 31, 2019				1	1	2			1	3		1	1						1
35. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	13	7.57	June 30, 2020				1	1	2			2	3	1	1	1						1
36. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	13	7.57	December 29, 2020				1	1	2			2	3	1	1	1						1
37. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	13	7.57	June 29, 2021				1	1	2			2	3	1	1	1						1
38. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	16	7.21	December 28, 2021				1	1	2			2	3	1	2	1	1	1				1
39. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	16	7.21	June 28, 2022				1	1	2			2	3	1	2	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. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	16	7.21	December 27, 2022				1	1	2			2	3	1	2	1	1	1				1
41. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	19	6.44	June 27, 2023				1	1	2			2	3	1	2	1	1	1		1		1	1					1
42. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	19	6.44	December 31, 2023				1	1	2			2	3	1	2	1	1	1		1		1	1					1
43. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	25	6.38	June 17, 2025				1	1	2			3	4	1	3	1	3	1		2		1	1					1
44. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	25	6.38	June 24, 2025				1	1	2			3	4	1	3	1	3	1		2		1	1					1
45. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	25	6.38	July 01, 2025				1	1	2			3	4	1	3	1	3	1		2		1	1					1
46. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	25	6.38	July 15, 2025				1	1	2			3	4	1	3	1	3	1		2		1	1					1
47. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	25	6.42	July 22, 2025				1	1	3			2	4	1	3	1	3	1		2		1	1					1
48. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	25	6.42	July 29, 2025				1	1	3			2	4	1	3	1	3	1		2		1	1					1
49. Adventures into the Unknown 21 (7/51, American Comics Group)	Universal	25	6.42	August 05, 2025				1	1	3			2	4	1	3	1	3	1		2		1	1					1
50. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	1	7.50	July 03, 2018										1
51. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	January 01, 2019										1					1
52. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	July 02, 2019										1					1
53. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	December 31, 2019										1					1
54. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	June 30, 2020										1					1
55. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	December 29, 2020										1					1
56. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	June 29, 2021										1					1
57. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	December 28, 2021										1					1
58. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	June 28, 2022										1					1
59. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	December 27, 2022										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
60. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	June 27, 2023										1					1
61. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	December 31, 2023										1					1
62. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	June 17, 2025										1					1
63. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	June 24, 2025										1					1
64. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	July 01, 2025										1					1
65. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	July 15, 2025										1					1
66. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	July 22, 2025										1					1
67. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	July 29, 2025										1					1
68. Adventures into the Unknown 21 (7/51, American Comics Group)	Signature	2	6.25	August 05, 2025										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 05, 2025.
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