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Black Book Detective #28
	Standard, July 1938

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. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	May 21, 2024												1
2. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	May 28, 2024												1
3. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	June 04, 2024												1
4. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	June 11, 2024												1
5. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	June 18, 2024												1
6. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	June 25, 2024												1
7. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	July 02, 2024												1
8. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	July 09, 2024												1
9. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	July 16, 2024												1
10. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	July 23, 2024												1
11. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	July 30, 2024												1
12. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	August 06, 2024												1
13. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	August 13, 2024												1
14. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	August 20, 2024												1
15. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	August 27, 2024												1
16. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	September 03, 2024												1
17. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	September 10, 2024												1
18. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	September 17, 2024												1
19. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	September 24, 2024												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. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	October 01, 2024												1
21. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	October 08, 2024												1
22. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	October 15, 2024												1
23. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	October 22, 2024												1
24. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	November 05, 2024												1
25. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	November 12, 2024												1
26. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	November 19, 2024												1
27. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	November 26, 2024												1
28. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	December 03, 2024												1
29. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	December 10, 2024												1
30. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	December 17, 2024												1
31. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	December 31, 2024												1
32. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	January 07, 2025												1
33. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	January 14, 2025												1
34. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	January 21, 2025												1
35. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	January 28, 2025												1
36. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	February 04, 2025												1
37. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	February 18, 2025												1
38. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	February 25, 2025												1
39. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	March 04, 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
40. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	March 11, 2025												1
41. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	March 18, 2025												1
42. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	March 25, 2025												1
43. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	April 01, 2025												1
44. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	April 08, 2025												1
45. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	April 15, 2025												1
46. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	April 22, 2025												1
47. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	April 29, 2025												1
48. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	May 06, 2025												1
49. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	May 13, 2025												1
50. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	May 20, 2025												1
51. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	May 27, 2025												1
52. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	June 03, 2025												1
53. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	June 10, 2025												1
54. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	June 17, 2025												1
55. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	June 24, 2025												1
56. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	July 01, 2025												1
57. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	July 15, 2025												1
58. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	July 22, 2025												1
59. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	July 29, 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
60. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	August 05, 2025												1
61. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	August 12, 2025												1
62. Black Book Detective 28 (July 1938, Standard)	Universal	1	6.50	August 19, 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 19, 2025.
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