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Showcase #17
	DC Comics, 11-12/58

Gardner Fox story		Adventures on Other Worlds.
Mike Sekowsky & Bernard Sachs art		Origin & 1st appearance of Adam Strange.
Gil Kane cover		1st appearance of Alanna.

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. Showcase 17 (11-12/58, DC Comics)	Universal	7	4.64	July 01, 2001								1							2		2	1		1
2. Showcase 17 (11-12/58, DC Comics)	Universal	10	4.65	January 27, 2002								1					1		2		4	1		1
3. Showcase 17 (11-12/58, DC Comics)	Universal	24	4.75	July 17, 2003								1			1	1	3	2	3	3	5	2	1	1	1
4. Showcase 17 (11-12/58, DC Comics)	Universal	25	4.66	January 08, 2004								1			1	1	3	2	3	3	5	2	1	2	1
5. Showcase 17 (11-12/58, DC Comics)	Universal	27	4.65	July 12, 2004								1			1	1	3	2	4	3	6	2	1	2	1
6. Showcase 17 (11-12/58, DC Comics)	Universal	31	4.71	December 16, 2004								1		1	2	1	3	2	4	3	7	2	1	2	2
7. Showcase 17 (11-12/58, DC Comics)	Universal	35	4.71	July 07, 2005							1	1		1	2	1	3	3	4	3	7	2	2	2	2		1
8. Showcase 17 (11-12/58, DC Comics)	Universal	37	4.61	January 27, 2006							1	1		1	2	1	3	3	4	3	8	2	2	2	2		2
9. Showcase 17 (11-12/58, DC Comics)	Universal	38	4.64	June 20, 2006							1	1		1	2	1	4	3	4	3	8	2	2	2	2		2
10. Showcase 17 (11-12/58, DC Comics)	Universal	40	4.59	January 10, 2007							1	1		1	2	1	4	3	4	3	8	4	2	2	2		2
11. Showcase 17 (11-12/58, DC Comics)	Universal	40	4.59	July 05, 2007							1	1		1	2	1	4	3	4	3	8	4	2	2	2		2
12. Showcase 17 (11-12/58, DC Comics)	Universal	41	4.55	January 09, 2008							1	1		1	2	1	4	3	4	3	8	4	3	2	2		2
13. Showcase 17 (11-12/58, DC Comics)	Universal	43	4.53	July 01, 2008							1	1		1	2	1	4	3	5	3	8	5	3	2	2		2
14. Showcase 17 (11-12/58, DC Comics)	Universal	45	4.57	January 13, 2009							1	1		1	2	2	4	3	5	3	9	5	3	2	2		2
15. Showcase 17 (11-12/58, DC Comics)	Universal	45	4.57	June 24, 2009							1	1		1	2	2	4	3	5	3	9	5	3	2	2		2
16. Showcase 17 (11-12/58, DC Comics)	Universal	46	4.51	December 15, 2009							1	1		1	2	2	4	3	5	3	9	5	3	2	3		2
17. Showcase 17 (11-12/58, DC Comics)	Universal	50	4.64	June 14, 2010							1	1		2	2	3	5	3	5	4	9	5	3	2	3		2
18. Showcase 17 (11-12/58, DC Comics)	Universal	50	4.64	December 27, 2010							1	1		2	2	3	5	3	5	4	9	5	3	2	3		2
19. Showcase 17 (11-12/58, DC Comics)	Universal	54	4.72	June 27, 2011							1	1	1	3	1	3	5	4	6	4	10	5	3	2	3		2
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. Showcase 17 (11-12/58, DC Comics)	Universal	55	4.70	January 02, 2012							1	1	1	3	1	3	5	4	6	4	10	6	3	2	3		2
21. Showcase 17 (11-12/58, DC Comics)	Universal	61	4.64	July 02, 2012							1	1	1	3	1	4	5	4	6	4	12	8	4	2	3		2
22. Showcase 17 (11-12/58, DC Comics)	Universal	64	4.63	December 31, 2012							1	1	1	3	1	4	5	5	6	5	12	9	4	2	3		2
23. Showcase 17 (11-12/58, DC Comics)	Universal	72	4.63	June 22, 2013							1	1	1	3	1	5	6	6	8	5	13	9	5	2	4		2
24. Showcase 17 (11-12/58, DC Comics)	Universal	76	4.56	December 31, 2013							1	1	1	3	1	5	6	6	9	5	13	9	7	2	5		2
25. Showcase 17 (11-12/58, DC Comics)	Universal	81	4.59	July 01, 2014							1	1	1	3	1	5	7	7	10	7	13	9	7	2	5		2
26. Showcase 17 (11-12/58, DC Comics)	Universal	92	4.54	December 30, 2014							1	1	2	3	1	5	8	7	11	9	16	9	8	2	5	1	2		1
27. Showcase 17 (11-12/58, DC Comics)	Universal	102	4.51	June 30, 2015							1	1	2	3	1	6	8	9	13	10	17	10	8	3	5	1	2	1	1
28. Showcase 17 (11-12/58, DC Comics)	Universal	112	4.50	December 29, 2015							1	1	2	3	1	8	10	9	14	10	18	12	8	3	5	2	2	1	2
29. Showcase 17 (11-12/58, DC Comics)	Universal	119	4.44	June 28, 2016							1	1	2	3	1	8	10	9	17	10	18	12	9	5	5	2	3	1	2
30. Showcase 17 (11-12/58, DC Comics)	Universal	132	4.44	December 27, 2016							1	1	2	3	2	10	12	9	19	11	18	12	10	6	7	2	4	1	2
31. Showcase 17 (11-12/58, DC Comics)	Universal	142	4.42	June 27, 2017							1	1	2	3	4	10	12	9	20	13	19	13	10	7	8	2	5	1	2
32. Showcase 17 (11-12/58, DC Comics)	Universal	157	4.38	January 02, 2018							1	1	2	3	4	11	12	12	22	15	21	15	11	7	8	2	5	1	4
33. Showcase 17 (11-12/58, DC Comics)	Universal	171	4.34	July 03, 2018							1	2	2	3	4	11	13	12	22	17	24	15	15	8	9	3	5	1	4
34. Showcase 17 (11-12/58, DC Comics)	Universal	184	4.33	January 01, 2019							1	2	2	4	4	13	13	13	24	18	25	16	16	9	9	3	5	2	5
35. Showcase 17 (11-12/58, DC Comics)	Universal	202	4.27	July 02, 2019							1	2	2	5	4	14	13	13	25	19	28	19	20	11	9	4	6	2	5
36. Showcase 17 (11-12/58, DC Comics)	Universal	225	4.21	December 31, 2019							1	2	2	5	4	14	15	15	27	23	29	21	23	14	9	6	7	3	5
37. Showcase 17 (11-12/58, DC Comics)	Universal	238	4.12	June 30, 2020							1	2	2	5	4	15	15	15	27	24	30	21	24	15	12	8	7	6	5
38. Showcase 17 (11-12/58, DC Comics)	Universal	249	4.07	December 29, 2020							1	2	2	5	4	15	15	15	27	26	32	21	26	17	12	8	8	8	5
39. Showcase 17 (11-12/58, DC Comics)	Universal	259	4.05	June 29, 2021							1	2	2	5	5	15	16	16	27	28	32	21	28	17	12	8	9	8	7
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. Showcase 17 (11-12/58, DC Comics)	Universal	265	4.05	December 28, 2021							1	2	3	5	5	15	16	15	28	29	34	21	28	17	12	10	9	8	7
41. Showcase 17 (11-12/58, DC Comics)	Universal	277	4.02	June 28, 2022							1	2	3	5	5	16	16	15	29	29	38	22	29	18	13	11	10	8	7
42. Showcase 17 (11-12/58, DC Comics)	Universal	288	3.97	December 27, 2022							1	2	3	5	5	16	16	15	29	30	39	23	31	19	15	13	10	9	7
43. Showcase 17 (11-12/58, DC Comics)	Universal	306	3.94	June 27, 2023							1	2	3	5	5	16	18	15	29	34	41	24	34	20	18	13	12	9	7
44. Showcase 17 (11-12/58, DC Comics)	Universal	324	3.88	December 31, 2023							1	2	3	6	5	16	18	15	31	34	42	25	37	22	21	15	14	9	8
45. Showcase 17 (11-12/58, DC Comics)	Signature	1	3.00	June 30, 2020																			1
46. Showcase 17 (11-12/58, DC Comics)	Signature	1	3.00	December 29, 2020																			1
47. Showcase 17 (11-12/58, DC Comics)	Signature	1	3.00	June 29, 2021																			1
48. Showcase 17 (11-12/58, DC Comics)	Signature	1	3.00	December 28, 2021																			1
49. Showcase 17 (11-12/58, DC Comics)	Signature	1	3.00	June 28, 2022																			1
50. Showcase 17 (11-12/58, DC Comics)	Signature	2	2.75	December 27, 2022																			1	1
51. Showcase 17 (11-12/58, DC Comics)	Signature	2	2.75	June 27, 2023																			1	1
52. Showcase 17 (11-12/58, DC Comics)	Signature	2	2.75	December 31, 2023																			1	1
53. Showcase 17 (11-12/58, DC Comics)	Restored	4	5.25	July 01, 2001								1						1			1		1
54. Showcase 17 (11-12/58, DC Comics)	Restored	4	5.25	January 27, 2002								1						1			1		1
55. Showcase 17 (11-12/58, DC Comics)	Restored	5	5.80	July 17, 2003								1	1					1			1		1
56. Showcase 17 (11-12/58, DC Comics)	Restored	6	5.58	January 08, 2004								1	1					1		1	1		1
57. Showcase 17 (11-12/58, DC Comics)	Restored	6	5.58	July 12, 2004								1	1					1		1	1		1
58. Showcase 17 (11-12/58, DC Comics)	Restored	5	5.10	December 16, 2004								1						1		1	1		1
59. Showcase 17 (11-12/58, DC Comics)	Restored	5	5.10	July 07, 2005								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
60. Showcase 17 (11-12/58, DC Comics)	Restored	5	5.10	January 27, 2006								1						1		1	1		1
61. Showcase 17 (11-12/58, DC Comics)	Restored	5	5.10	June 20, 2006								1						1		1	1		1
62. Showcase 17 (11-12/58, DC Comics)	Restored	6	4.55	January 10, 2007								1						1		1	1		1			1
63. Showcase 17 (11-12/58, DC Comics)	Restored	7	4.33	July 05, 2007								1						1		1	1		2			1
64. Showcase 17 (11-12/58, DC Comics)	Restored	8	4.41	January 09, 2008								1						1	1	1	1		2			1
65. Showcase 17 (11-12/58, DC Comics)	Restored	8	4.41	July 01, 2008								1						1	1	1	1		2			1
66. Showcase 17 (11-12/58, DC Comics)	Restored	8	4.41	January 13, 2009								1						1	1	1	1		2			1
67. Showcase 17 (11-12/58, DC Comics)	Restored	8	4.41	June 24, 2009								1						1	1	1	1		2			1
68. Showcase 17 (11-12/58, DC Comics)	Restored	8	4.41	December 15, 2009								1						1	1	1	1		2			1
69. Showcase 17 (11-12/58, DC Comics)	Restored	8	4.41	June 14, 2010								1						1	1	1	1		2			1
70. Showcase 17 (11-12/58, DC Comics)	Restored	9	4.59	December 27, 2010								1					1	1	1	1	1		2			1
71. Showcase 17 (11-12/58, DC Comics)	Restored	9	4.59	June 27, 2011								1					1	1	1	1	1		2			1
72. Showcase 17 (11-12/58, DC Comics)	Restored	10	4.31	January 02, 2012								1					1	1	1	1	1		2			2
73. Showcase 17 (11-12/58, DC Comics)	Restored	12	4.09	July 02, 2012								1					1	1	1	1	2		2		1	2
74. Showcase 17 (11-12/58, DC Comics)	Restored	13	4.43	December 31, 2012								2					1	1	1	1	2		2		1	2
75. Showcase 17 (11-12/58, DC Comics)	Restored	15	4.54	June 22, 2013							1	2					1	1	1	1	2		2		1	2	1
76. Showcase 17 (11-12/58, DC Comics)	Restored	15	4.54	December 31, 2013							1	2					1	1	1	1	2		2		1	2	1
77. Showcase 17 (11-12/58, DC Comics)	Restored	15	4.54	July 01, 2014							1	2					1	1	1	1	2		2		1	2	1
78. Showcase 17 (11-12/58, DC Comics)	Restored	16	4.54	December 30, 2014							1	2					1	1	1	2	2		2		1	2	1
79. Showcase 17 (11-12/58, DC Comics)	Restored	16	4.54	June 30, 2015							1	2					1	1	1	2	2		2		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. Showcase 17 (11-12/58, DC Comics)	Restored	16	4.54	December 29, 2015							1	2					1	1	1	2	2		2		1	2	1
81. Showcase 17 (11-12/58, DC Comics)	Restored	16	4.54	June 28, 2016							1	2					1	1	1	2	2		2		1	2	1
82. Showcase 17 (11-12/58, DC Comics)	Restored	15	4.47	December 27, 2016							1	2					1		1	2	2		2		1	2	1
83. Showcase 17 (11-12/58, DC Comics)	Restored	15	4.47	June 27, 2017							1	2					1		1	2	2		2		1	2	1
84. Showcase 17 (11-12/58, DC Comics)	Restored	15	4.47	January 02, 2018							1	2					1		1	2	2		2		1	2	1
85. Showcase 17 (11-12/58, DC Comics)	Restored	24	4.25	July 03, 2018							1	2			1		1		1	4	5	1	2		2	2	2
86. Showcase 17 (11-12/58, DC Comics)	Restored	25	4.26	January 01, 2019							1	2			1		1		1	5	5	1	2		2	2	2
87. Showcase 17 (11-12/58, DC Comics)	Restored	26	4.25	July 02, 2019							1	2			1		1		1	5	6	1	2		2	2	2
88. Showcase 17 (11-12/58, DC Comics)	Restored	31	4.31	December 31, 2019							1	2			2		1		3	5	6	1	4		2	2	2
89. Showcase 17 (11-12/58, DC Comics)	Restored	34	4.15	June 30, 2020							1	2			2		1		3	5	7	1	5		2	2	2		1
90. Showcase 17 (11-12/58, DC Comics)	Restored	35	4.13	December 29, 2020							1	2			2		1		3	5	7	2	5		2	2	2		1
91. Showcase 17 (11-12/58, DC Comics)	Restored	35	4.13	June 29, 2021							1	2			2		1		3	5	7	2	5		2	2	2		1
92. Showcase 17 (11-12/58, DC Comics)	Restored	38	4.12	December 28, 2021							1	2			2		1		4	6	7	2	5	1	2	2	2		1
93. Showcase 17 (11-12/58, DC Comics)	Restored	39	4.12	June 28, 2022							1	2			2		1		4	6	8	2	5	1	2	2	2		1
94. Showcase 17 (11-12/58, DC Comics)	Restored	40	4.15	December 27, 2022							1	2			2		1	1	4	6	8	2	5	1	2	2	2		1
95. Showcase 17 (11-12/58, DC Comics)	Restored	41	4.11	June 27, 2023							1	2			2		1	1	4	6	8	2	5	2	2	2	2		1
96. Showcase 17 (11-12/58, DC Comics)	Restored	43	4.14	December 31, 2023							1	2			2		1	1	5	7	8	2	5	2	2	2	2		1
97. Showcase 17 (11-12/58, DC Comics)	Qualified	1	5.00	December 29, 2015															1
98. Showcase 17 (11-12/58, DC Comics)	Qualified	2	4.50	June 28, 2016															1		1
99. Showcase 17 (11-12/58, DC Comics)	Qualified	2	4.50	December 27, 2016															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
100. Showcase 17 (11-12/58, DC Comics)	Qualified	2	4.50	June 27, 2017															1		1
101. Showcase 17 (11-12/58, DC Comics)	Qualified	2	4.50	January 02, 2018															1		1
102. Showcase 17 (11-12/58, DC Comics)	Qualified	2	4.50	July 03, 2018															1		1
103. Showcase 17 (11-12/58, DC Comics)	Qualified	2	4.50	January 01, 2019															1		1
104. Showcase 17 (11-12/58, DC Comics)	Qualified	2	4.50	July 02, 2019															1		1
105. Showcase 17 (11-12/58, DC Comics)	Qualified	2	4.50	December 31, 2019															1		1
106. Showcase 17 (11-12/58, DC Comics)	Qualified	2	4.50	June 30, 2020															1		1
107. Showcase 17 (11-12/58, DC Comics)	Qualified	2	4.50	December 29, 2020															1		1
108. Showcase 17 (11-12/58, DC Comics)	Qualified	2	4.50	June 29, 2021															1		1
109. Showcase 17 (11-12/58, DC Comics)	Qualified	2	4.50	December 28, 2021															1		1
110. Showcase 17 (11-12/58, DC Comics)	Qualified	2	4.50	June 28, 2022															1		1
111. Showcase 17 (11-12/58, DC Comics)	Qualified	2	4.50	December 27, 2022															1		1
112. Showcase 17 (11-12/58, DC Comics)	Qualified	2	4.50	June 27, 2023															1		1
113. Showcase 17 (11-12/58, DC Comics)	Qualified	3	4.17	December 31, 2023															1		1	1

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