Koffing (1st Edition)

Market prices

Koffing (1st Edition) 51/102 from Base Set (1st Edition) sells for $19.46 ungraded: the median of 12 completed sales over the last 30 days, as of October 2, 2026. Graded copies: PSA 10 at $701.88 (4 sales) and CGC 10 at $243.66 (3 sales).

Graded population: PSA 2,811 copies (22.5% in 10), CGC 551 copies (6.9% in 10), and BGS 42 copies, as of October 1, 2026.

Ungraded

MedianRangeSales

30 days$19.46$11.59 – $39.4812 sales

90 days$19.81$19.81 – $19.8148 sales

Median by period. Short periods can rest on a handful of sales: the count is shown next to each price, and prices marked “est.” are indicative.

Graded Prices

PSA

PSA graded prices

Grade	Median	Sales
PSA 10	$701.88	4 sales
PSA 9	$90.29	5 sales
PSA 8	$55.44	5 sales
PSA 7	$38.59est.	1 sale
PSA 6	$58.22est.	1 sale
PSA 5	$38.81est.	1 sale

CGC

CGC graded prices

Grade	Median	Sales
CGC Pristine 10	$487.12est.	1 sale
CGC 10	$243.66	3 sales
CGC 9.5	$108.91	3 sales
CGC 9	$77.24	3 sales
CGC 8.5	$48.51est.	1 sale
CGC 7.5	$29.41est.	2 sales
CGC 7	$24.25est.	1 sale

Actual prices may vary.

Graded population report — Koffing (1st Edition) #51

Updated monthly · as of September 2026

PSA

2,811 graded · 22.5% in 10

Grade	Pop
10	632
9	1,103
8.5	14
8	574
7	261
6	112
5	61
4	24
3	13
2	6
1	8
Authentic	3

0%20%40%

Au123456788.5910

CGC

551 graded · 6.9% in 10

Grade	Pop
Pristine 10	1
Gem Mint 10	37
9.5	20
9	136
8.5	116
8	82
7.5	60
7	24
6.5	21
6	16
5.5	15
5	6
4.5	7
4	2
3	2
Authentic	6

0%12.5%25%

Au12344.555.566.577.588.599.5GM10Pr10Pf10

BGS

42 graded

Grade	Pop
9.5	6
9	14
8.5	7
8	7
7.5	4
7	1
6.5	1
5	2

0%17.5%35%

1234566.577.588.599.5Pr10BL10