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Detective Comics #171
	DC Comics, 5/51

Dick Sprang, Bruno Premiani, Dan Barry,		Penguin cover and story.
Frank Bolle and Charles Paris art
Win Mortimer 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. Detective Comics 171 (5/51, DC Comics)	Universal	3	4.17	July 01, 2001														1		1				1
2. Detective Comics 171 (5/51, DC Comics)	Universal	5	5.70	January 27, 2002							1				1			1		1				1
3. Detective Comics 171 (5/51, DC Comics)	Universal	7	6.14	July 17, 2003							1			1	2			1		1				1
4. Detective Comics 171 (5/51, DC Comics)	Universal	7	6.14	January 08, 2004							1			1	2			1		1				1
5. Detective Comics 171 (5/51, DC Comics)	Universal	8	6.25	July 12, 2004							1			1	3			1		1				1
6. Detective Comics 171 (5/51, DC Comics)	Universal	8	6.25	December 16, 2004							1			1	3			1		1				1
7. Detective Comics 171 (5/51, DC Comics)	Universal	9	6.50	July 07, 2005							1	1		1	3			1		1				1
8. Detective Comics 171 (5/51, DC Comics)	Universal	9	6.50	January 27, 2006							1	1		1	3			1		1				1
9. Detective Comics 171 (5/51, DC Comics)	Universal	9	6.50	June 20, 2006							1	1		1	3			1		1				1
10. Detective Comics 171 (5/51, DC Comics)	Universal	9	6.50	January 10, 2007							1	1		1	3			1		1				1
11. Detective Comics 171 (5/51, DC Comics)	Universal	9	6.50	July 05, 2007							1	1		1	3			1		1				1
12. Detective Comics 171 (5/51, DC Comics)	Universal	10	6.35	January 09, 2008							1	1		1	3			1	1	1				1
13. Detective Comics 171 (5/51, DC Comics)	Universal	10	6.35	July 01, 2008							1	1		1	3			1	1	1				1
14. Detective Comics 171 (5/51, DC Comics)	Universal	10	6.35	January 13, 2009							1	1		1	3			1	1	1				1
15. Detective Comics 171 (5/51, DC Comics)	Universal	10	6.35	June 24, 2009							1	1		1	3			1	1	1				1
16. Detective Comics 171 (5/51, DC Comics)	Universal	10	6.35	December 15, 2009							1	1		1	3			1	1	1				1
17. Detective Comics 171 (5/51, DC Comics)	Universal	10	6.35	June 14, 2010							1	1		1	3			1	1	1				1
18. Detective Comics 171 (5/51, DC Comics)	Universal	11	6.36	December 27, 2010							1	1		1	3	1		1	1	1				1
19. Detective Comics 171 (5/51, DC Comics)	Universal	11	6.36	June 27, 2011							1	1		1	3	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
20. Detective Comics 171 (5/51, DC Comics)	Universal	11	6.36	January 02, 2012							1	1		1	3	1		1	1	1				1
21. Detective Comics 171 (5/51, DC Comics)	Universal	12	6.25	July 02, 2012							1	1		1	3	1		1	2	1				1
22. Detective Comics 171 (5/51, DC Comics)	Universal	13	5.96	December 31, 2012							1	1		1	3	1		1	2	1				2
23. Detective Comics 171 (5/51, DC Comics)	Universal	15	5.80	June 22, 2013							1	1		1	3	1	1	1	2	1		1		2
24. Detective Comics 171 (5/51, DC Comics)	Universal	15	5.80	December 31, 2013							1	1		1	3	1	1	1	2	1		1		2
25. Detective Comics 171 (5/51, DC Comics)	Universal	17	5.74	July 01, 2014							1	1		1	4	1	1	1	2	1		2		2
26. Detective Comics 171 (5/51, DC Comics)	Universal	17	5.74	December 30, 2014							1	1		1	4	1	1	1	2	1		2		2
27. Detective Comics 171 (5/51, DC Comics)	Universal	18	5.81	June 30, 2015							1	1		1	5	1	1	1	2	1		2		2
28. Detective Comics 171 (5/51, DC Comics)	Universal	18	5.81	December 29, 2015							1	1		1	5	1	1	1	2	1		2		2
29. Detective Comics 171 (5/51, DC Comics)	Universal	18	5.81	June 28, 2016							1	1		1	5	1	1	1	2	1		2		2
30. Detective Comics 171 (5/51, DC Comics)	Universal	19	5.87	December 27, 2016							1	1		1	6	1	1	1	2	1		2		2
31. Detective Comics 171 (5/51, DC Comics)	Universal	23	5.72	June 27, 2017							1	1		1	6	1	2	2	2	2	1	2		2
32. Detective Comics 171 (5/51, DC Comics)	Universal	27	5.74	January 02, 2018							1	1	1	1	7	1	3	2	2	2	1	2		3
33. Detective Comics 171 (5/51, DC Comics)	Universal	30	5.63	July 03, 2018							1	1		2	7	2	3	2	2	3	1	3		3
34. Detective Comics 171 (5/51, DC Comics)	Universal	32	5.69	January 01, 2019							2	1		2	7	2	3	2	2	3	2	3		3
35. Detective Comics 171 (5/51, DC Comics)	Universal	37	5.58	July 02, 2019							2	1		3	7	3	3	2	2	4	2	4		4
36. Detective Comics 171 (5/51, DC Comics)	Universal	41	5.50	December 31, 2019							2	2		2	7	3	3	2	3	6	3	4		4
37. Detective Comics 171 (5/51, DC Comics)	Universal	45	5.34	June 30, 2020							2	2		2	8	3	3	2	3	6	3	5		5		1
38. Detective Comics 171 (5/51, DC Comics)	Universal	47	5.41	December 29, 2020							2	3		2	8	3	3	3	3	6	3	5		5		1
39. Detective Comics 171 (5/51, DC Comics)	Universal	49	5.46	June 29, 2021							2	3		2	8	5	3	3	3	6	3	5		5		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. Detective Comics 171 (5/51, DC Comics)	Universal	49	5.46	December 28, 2021							2	3		2	8	5	3	3	3	6	3	5		5		1
41. Detective Comics 171 (5/51, DC Comics)	Universal	49	5.46	June 28, 2022							2	3		2	8	5	3	3	3	6	3	5		5		1
42. Detective Comics 171 (5/51, DC Comics)	Universal	50	5.52	December 27, 2022							2	4		2	8	5	3	3	3	6	3	5		5		1
43. Detective Comics 171 (5/51, DC Comics)	Universal	52	5.43	June 27, 2023							2	4		2	8	5	3	3	3	6	4	5		6		1
44. Detective Comics 171 (5/51, DC Comics)	Universal	57	5.25	December 31, 2023							2	4		2	8	5	3	3	3	7	6	5		7	1	1
45. Detective Comics 171 (5/51, DC Comics)	Universal	72	5.32	June 24, 2025							3	7		5	8	5	3	4	4	8	6	6	2	7	2	1			1
46. Detective Comics 171 (5/51, DC Comics)	Universal	73	5.33	July 01, 2025							3	7		5	8	5	3	5	4	8	6	6	2	7	2	1			1
47. Detective Comics 171 (5/51, DC Comics)	Universal	73	5.33	July 15, 2025							3	7		5	8	5	3	5	4	8	6	6	2	7	2	1			1
48. Detective Comics 171 (5/51, DC Comics)	Universal	73	5.33	July 22, 2025							3	7		5	8	5	3	5	4	8	6	6	2	7	2	1			1
49. Detective Comics 171 (5/51, DC Comics)	Universal	73	5.33	July 29, 2025							3	7		5	8	5	3	5	4	8	6	6	2	7	2	1			1
50. Detective Comics 171 (5/51, DC Comics)	Universal	73	5.33	August 05, 2025							3	7		5	8	5	3	5	4	8	6	6	2	7	2	1			1
51. Detective Comics 171 (5/51, DC Comics)	Universal	73	5.33	August 12, 2025							3	7		5	8	5	3	5	4	8	6	6	2	7	2	1			1
52. Detective Comics 171 (5/51, DC Comics)	Universal	74	5.37	August 19, 2025							3	8		5	8	5	3	5	4	8	6	6	2	7	2	1			1
53. Detective Comics 171 (5/51, DC Comics)	Restored	1	4.00	January 13, 2009																	1
54. Detective Comics 171 (5/51, DC Comics)	Restored	1	4.00	June 24, 2009																	1
55. Detective Comics 171 (5/51, DC Comics)	Restored	1	4.00	December 15, 2009																	1
56. Detective Comics 171 (5/51, DC Comics)	Restored	2	5.50	June 14, 2010											1						1
57. Detective Comics 171 (5/51, DC Comics)	Restored	2	5.50	December 27, 2010											1						1
58. Detective Comics 171 (5/51, DC Comics)	Restored	2	5.50	June 27, 2011											1						1
59. Detective Comics 171 (5/51, DC Comics)	Restored	2	5.50	January 02, 2012											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. Detective Comics 171 (5/51, DC Comics)	Restored	2	5.50	July 02, 2012											1						1
61. Detective Comics 171 (5/51, DC Comics)	Restored	2	5.50	December 31, 2012											1						1
62. Detective Comics 171 (5/51, DC Comics)	Restored	2	5.50	June 22, 2013											1						1
63. Detective Comics 171 (5/51, DC Comics)	Restored	2	5.50	December 31, 2013											1						1
64. Detective Comics 171 (5/51, DC Comics)	Restored	2	5.50	July 01, 2014											1						1
65. Detective Comics 171 (5/51, DC Comics)	Restored	2	5.50	December 30, 2014											1						1
66. Detective Comics 171 (5/51, DC Comics)	Restored	2	5.50	June 30, 2015											1						1
67. Detective Comics 171 (5/51, DC Comics)	Restored	2	5.50	December 29, 2015											1						1
68. Detective Comics 171 (5/51, DC Comics)	Restored	2	5.50	June 28, 2016											1						1
69. Detective Comics 171 (5/51, DC Comics)	Restored	2	5.50	December 27, 2016											1						1
70. Detective Comics 171 (5/51, DC Comics)	Restored	2	5.50	June 27, 2017											1						1
71. Detective Comics 171 (5/51, DC Comics)	Restored	2	5.50	January 02, 2018											1						1
72. Detective Comics 171 (5/51, DC Comics)	Restored	3	4.50	July 03, 2018											1						1			1
73. Detective Comics 171 (5/51, DC Comics)	Restored	3	4.50	January 01, 2019											1						1			1
74. Detective Comics 171 (5/51, DC Comics)	Restored	3	4.50	July 02, 2019											1						1			1
75. Detective Comics 171 (5/51, DC Comics)	Restored	3	4.50	December 31, 2019											1						1			1
76. Detective Comics 171 (5/51, DC Comics)	Restored	4	4.38	June 30, 2020											1						2			1
77. Detective Comics 171 (5/51, DC Comics)	Restored	4	4.38	December 29, 2020											1						2			1
78. Detective Comics 171 (5/51, DC Comics)	Restored	4	4.38	June 29, 2021											1						2			1
79. Detective Comics 171 (5/51, DC Comics)	Restored	4	4.38	December 28, 2021											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
80. Detective Comics 171 (5/51, DC Comics)	Restored	5	4.50	June 28, 2022											1				1		2			1
81. Detective Comics 171 (5/51, DC Comics)	Restored	5	4.50	December 27, 2022											1				1		2			1
82. Detective Comics 171 (5/51, DC Comics)	Restored	5	4.50	June 27, 2023											1				1		2			1
83. Detective Comics 171 (5/51, DC Comics)	Restored	6	4.08	December 31, 2023											1				1		2			1	1
84. Detective Comics 171 (5/51, DC Comics)	Restored	6	4.08	June 24, 2025											1				1		2			1	1
85. Detective Comics 171 (5/51, DC Comics)	Restored	6	4.08	July 01, 2025											1				1		2			1	1
86. Detective Comics 171 (5/51, DC Comics)	Restored	6	4.08	July 15, 2025											1				1		2			1	1
87. Detective Comics 171 (5/51, DC Comics)	Restored	6	4.08	July 22, 2025											1				1		2			1	1
88. Detective Comics 171 (5/51, DC Comics)	Restored	6	4.08	July 29, 2025											1				1		2			1	1
89. Detective Comics 171 (5/51, DC Comics)	Restored	6	4.08	August 05, 2025											1				1		2			1	1
90. Detective Comics 171 (5/51, DC Comics)	Restored	6	4.08	August 12, 2025											1				1		2			1	1
91. Detective Comics 171 (5/51, DC Comics)	Restored	6	4.08	August 19, 2025											1				1		2			1	1

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