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Action Comics #340
DC Comics, 8/66
Jim Shooter storyOrigin and 1st appearance of the
Al Plastino and Jim Mooney artParasite (Raymond Maxwell Jensen).
Curt Swan and George Klein coverSuperman centerfold pin-up by Curt Swan.

 BooksCGC LabelCGC TotalAvg. Grade109.99.89.69.49.29.08.58.07.57.06.56.05.55.04.54.03.53.02.52.01.81.51.00.5
1 BOOKUniversal5606.350
0.00%		0
0.00%		2
0.4%		11
2.3%		16
5.2%		17
8.2%		26
12.9%		39
19.8%		41
27.1%		53
36.6%		43
44.3%		56
54%		44
62%		45
70%		39
77%		38
84%		42
91%		18
95%		12
97%		5
98%		3
98%		1
98%		1
99%		0
99%		8
100%
1 BOOKSignature425.590
0.00%		0
0.00%		0
0.0%		0
0.0%		0
0.0%		1
2.4%		1
4.8%		3
11.9%		0
11.9%		2
16.7%		5
28.6%		1
31.0%		3
38.1%		7
55%		4
64%		4
74%		5
86%		4
95%		2
100%		0
100%		0
100%		0
100%		0
100%		0
100%		0
100%
1 BOOKQualified245.510
0.00%		0
0.00%		0
0.0%		0
0.0%		0
0.0%		1
4.2%		1
8.3%		0
8.3%		1
12.5%		1
16.7%		2
25.0%		2
33.3%		1
37.5%		2
45.8%		2
54%		4
71%		4
88%		3
100%		0
100%		0
100%		0
100%		0
100%		0
100%		0
100%		0
100%
1 BOOKRestored44.880
0.00%		0
0.00%		0
0.0%		0
0.0%		0
0.0%		0
0.0%		0
0.0%		0
0.0%		0
0.0%		0
0.0%		0
0.0%		1
25.0%		0
25.0%		0
25.0%		1
50%		1
75%		0
75%		1
100%		0
100%		0
100%		0
100%		0
100%		0
100%		0
100%		0
100%

TOTAL SUBMISSIONS (all types): 630
Action Comics #340 (1966, DC Comics)
CGC Universal Grade Distribution
0%

0
10		0%

0
9.9		0%

2
9.8		2%

11
9.6		3%

16
9.4		3%

17
9.2		5%

26
9.0		7%

39
8.5		7%

41
8.0		9%

53
7.5		8%

43
7.0		10%

56
6.5		8%

44
6.0		8%

45
5.5		7%

39
5.0		7%

38
4.5		8%

42
4.0		3%

18
3.5		2%

12
3.0		1%

5
2.5		1%

3
2.0		0%

1
1.8		0%

1
1.5		0%

0
1.0		1%

8
0.5
cgcdata.com, last updated February 24, 2026

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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 February 24, 2026.
A visual of CGC label changes through the years is available here.
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