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Superman #307
	DC Comics, 1/77

Gerry Conway story		Supergirl appearance.
Jos? Luis Garc?a-L?pez &
Frank Springer art, Neal Adams 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. Superman 307 (1/77, DC Comics)	Universal	1	9.60	July 17, 2003				1
2. Superman 307 (1/77, DC Comics)	Universal	2	9.60	January 08, 2004				2
3. Superman 307 (1/77, DC Comics)	Universal	2	9.60	July 12, 2004				2
4. Superman 307 (1/77, DC Comics)	Universal	3	9.67	December 16, 2004			1	2
5. Superman 307 (1/77, DC Comics)	Universal	5	9.60	July 07, 2005			1	3	1
6. Superman 307 (1/77, DC Comics)	Universal	5	9.60	January 27, 2006			1	3	1
7. Superman 307 (1/77, DC Comics)	Universal	6	9.60	June 20, 2006			1	4	1
8. Superman 307 (1/77, DC Comics)	Universal	7	8.94	January 10, 2007			1	4	1										1
9. Superman 307 (1/77, DC Comics)	Universal	8	9.00	July 05, 2007			1	4	2										1
10. Superman 307 (1/77, DC Comics)	Universal	10	9.08	January 09, 2008			1	4	4										1
11. Superman 307 (1/77, DC Comics)	Universal	10	9.08	July 01, 2008			1	4	4										1
12. Superman 307 (1/77, DC Comics)	Universal	13	9.20	January 13, 2009			1	7	4										1
13. Superman 307 (1/77, DC Comics)	Universal	20	9.28	June 24, 2009			1	11	5	1	1								1
14. Superman 307 (1/77, DC Comics)	Universal	21	9.27	December 15, 2009			1	11	5	1	2								1
15. Superman 307 (1/77, DC Comics)	Universal	22	9.28	June 14, 2010			1	12	5	1	2								1
16. Superman 307 (1/77, DC Comics)	Universal	21	9.28	December 27, 2010			1	12	4	1	2								1
17. Superman 307 (1/77, DC Comics)	Universal	21	9.28	June 27, 2011			1	12	4	1	2								1
18. Superman 307 (1/77, DC Comics)	Universal	22	9.29	January 02, 2012			1	13	4	1	2								1
19. Superman 307 (1/77, DC Comics)	Universal	23	9.30	July 02, 2012			1	14	4	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. Superman 307 (1/77, DC Comics)	Universal	24	9.32	December 31, 2012			1	15	4	1	2								1
21. Superman 307 (1/77, DC Comics)	Universal	26	9.32	June 22, 2013			1	15	5	2	2								1
22. Superman 307 (1/77, DC Comics)	Universal	26	9.33	December 31, 2013			2	15	4	2	2								1
23. Superman 307 (1/77, DC Comics)	Universal	27	9.33	July 01, 2014			2	15	5	2	2								1
24. Superman 307 (1/77, DC Comics)	Universal	27	9.33	December 30, 2014			2	15	5	2	2								1
25. Superman 307 (1/77, DC Comics)	Universal	27	9.33	June 30, 2015			2	15	5	2	2								1
26. Superman 307 (1/77, DC Comics)	Universal	27	9.33	December 29, 2015			2	15	5	2	2								1
27. Superman 307 (1/77, DC Comics)	Universal	29	9.35	June 28, 2016			2	17	5	2	2								1
28. Superman 307 (1/77, DC Comics)	Universal	31	9.32	December 27, 2016			2	18	5	2	2		1						1
29. Superman 307 (1/77, DC Comics)	Universal	31	9.32	June 27, 2017			2	18	5	2	2		1						1
30. Superman 307 (1/77, DC Comics)	Universal	31	9.32	January 02, 2018			2	18	5	2	2		1						1
31. Superman 307 (1/77, DC Comics)	Universal	34	9.11	July 03, 2018			2	19	6	2	2		1						1						1
32. Superman 307 (1/77, DC Comics)	Universal	34	9.11	January 01, 2019			2	19	6	2	2		1						1						1
33. Superman 307 (1/77, DC Comics)	Universal	39	9.02	July 02, 2019			3	20	6	2	3		2					1	1						1
34. Superman 307 (1/77, DC Comics)	Universal	41	9.01	December 31, 2019			4	20	6	2	3		3					1	1						1
35. Superman 307 (1/77, DC Comics)	Universal	41	9.01	June 30, 2020			4	20	6	2	3		3					1	1						1
36. Superman 307 (1/77, DC Comics)	Universal	43	8.99	December 29, 2020			4	20	7	2	3		3	1				1	1						1
37. Superman 307 (1/77, DC Comics)	Universal	44	9.00	June 29, 2021			4	21	7	2	3		3	1				1	1						1
38. Superman 307 (1/77, DC Comics)	Universal	44	9.00	December 28, 2021			4	21	7	2	3		3	1				1	1						1
39. Superman 307 (1/77, DC Comics)	Universal	50	8.86	June 28, 2022			4	23	7	2	3		4	2	1			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. Superman 307 (1/77, DC Comics)	Universal	53	8.85	December 27, 2022			4	23	7	2	4	2	4	2	1			2	1						1
41. Superman 307 (1/77, DC Comics)	Universal	55	8.83	June 27, 2023			4	24	7	2	4	2	4	2	2			2	1						1
42. Superman 307 (1/77, DC Comics)	Universal	57	8.72	December 31, 2023			4	24	7	2	4	2	4	2	3			2	1		1				1
43. Superman 307 (1/77, DC Comics)	Signature	1	9.60	December 27, 2010				1
44. Superman 307 (1/77, DC Comics)	Signature	1	9.60	June 27, 2011				1
45. Superman 307 (1/77, DC Comics)	Signature	2	9.50	January 02, 2012				1	1
46. Superman 307 (1/77, DC Comics)	Signature	2	9.50	July 02, 2012				1	1
47. Superman 307 (1/77, DC Comics)	Signature	2	9.50	December 31, 2012				1	1
48. Superman 307 (1/77, DC Comics)	Signature	2	9.50	June 22, 2013				1	1
49. Superman 307 (1/77, DC Comics)	Signature	3	9.47	December 31, 2013				1	2
50. Superman 307 (1/77, DC Comics)	Signature	3	9.47	July 01, 2014				1	2
51. Superman 307 (1/77, DC Comics)	Signature	3	9.47	December 30, 2014				1	2
52. Superman 307 (1/77, DC Comics)	Signature	3	9.47	June 30, 2015				1	2
53. Superman 307 (1/77, DC Comics)	Signature	3	9.47	December 29, 2015				1	2
54. Superman 307 (1/77, DC Comics)	Signature	3	9.47	June 28, 2016				1	2
55. Superman 307 (1/77, DC Comics)	Signature	3	9.47	December 27, 2016				1	2
56. Superman 307 (1/77, DC Comics)	Signature	3	9.47	June 27, 2017				1	2
57. Superman 307 (1/77, DC Comics)	Signature	3	9.47	January 02, 2018				1	2
58. Superman 307 (1/77, DC Comics)	Signature	3	9.47	July 03, 2018				1	2
59. Superman 307 (1/77, DC Comics)	Signature	3	9.47	January 01, 2019				1	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
60. Superman 307 (1/77, DC Comics)	Signature	3	9.47	July 02, 2019				1	2
61. Superman 307 (1/77, DC Comics)	Signature	3	9.47	December 31, 2019				1	2
62. Superman 307 (1/77, DC Comics)	Signature	4	8.10	June 30, 2020				1	2												1
63. Superman 307 (1/77, DC Comics)	Signature	5	7.88	December 29, 2020				1	2						1						1
64. Superman 307 (1/77, DC Comics)	Signature	5	7.88	June 29, 2021				1	2						1						1
65. Superman 307 (1/77, DC Comics)	Signature	5	7.88	December 28, 2021				1	2						1						1
66. Superman 307 (1/77, DC Comics)	Signature	5	7.88	June 28, 2022				1	2						1						1
67. Superman 307 (1/77, DC Comics)	Signature	5	7.88	December 27, 2022				1	2						1						1
68. Superman 307 (1/77, DC Comics)	Signature	5	7.88	June 27, 2023				1	2						1						1
69. Superman 307 (1/77, DC Comics)	Signature	5	7.88	December 31, 2023				1	2						1						1

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"CGC Census Analysis" is provided by Greg Holland (©2003-2026).
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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