Koffing #51, 1st Edition, Spanish Base Set
Spanish edition
- Card number: #51/102
- ·Finish: Non-Holo
A PSA 9 Koffing #51 1st Edition from Spanish Base Set has a TCGBerg fair value of $37 as of Nov 15, 2026. It rests on 3 recorded sales, the latest on Jul 13, 2026. PSA has graded 10 copies at PSA 9. Sales evidence is limited, so treat this value as a rough estimate.
TCGBerg Algorithm (estimated from recorded sales).
3 sales · latest Jul 13, 2026
- Population · PSA 9
- 10
- Market cap
- $366
- Volatility
- 4.4%
- YTD
- ↑ 12.4%
- Sales evidence
- Limited
TCGBerg fair value · PSA 9
$37
Based on 3 recorded sales. Latest sale: Jul 13, 2026.
Price history
Weekly fair value over time, plus a confidence band around it: how precisely we can pin the value, which tightens as more sales confirm it. Dots mark individual sales, snapped to their week: red when above fair value (a premium), green when below (a deal), hollow when flagged as an outlier. Switch the active grade with the selector above.Weekly fair value for PSA 9. Shaded area is the confidence band: how precisely we can pin the value; it tightens as more sales confirm it. Dots are individual sales. Confidence band: how precisely we can pin the fair value. It widens when sales scatter and narrows as more sales back the value up. The dots show the actual sale prices.
What the evidence says
The last PSA 9 sale, $22 on Jul 13, 2026, sits 41.0% below the $37 fair value. The value rests on 3 recorded PSA 9 sales. With so few PSA 9 sales on record, a single sale can sit far from the value. Its confidence band runs from $34 to $39. A PSA 10 ($137) is worth 3.8 times a PSA 9 ($37). Over the past 30 days the PSA 9 value has risen 9.9%. With limited sales evidence, read the gap and the band as rough guides.
TCGBerg fair value by grade
Side-by-side comparison of value across every grade and ungraded condition we track for this printing. The bar chart uses a log scale so raw and gem-mint fit on one axis. Solid bars are the TCGBerg fair value, modelled from recorded sales. Hatched bars are the latest market price instead, shown for ungraded conditions that trade too rarely for us to price one honestly.Value at each grade and ungraded condition. Log scale. Tap a row to switch the whole page.
Behind the scenes
How the published fair value for this grade was produced: the sales it rests on, how they were put together, and every recorded change afterwards. It describes one saved calculation, not a live recomputation.What goes into this price, and how much we know.
Recent sales
3 trackedEach sale against the grade's fair value on the day it sold.
| Date | Grade | Venue | Price | vs fair value |
|---|---|---|---|---|
| Jul 13, 2026 | PSA9 | Fanatics Collect | $22 | below fair value by -23.8% |
| Apr 28, 2026 | PSA10 | eBay | $58 | below fair value by -29.9% |
| Feb 12, 2026 | PSA9 | eBay | $25 | below fair value by -14.6% |
- $22Jul 13, 2026 · via Fanatics CollectPSA9↓below fair value by 23.8%
- $58Apr 28, 2026 · via eBayPSA10↓below fair value by 29.9%
- $25Feb 12, 2026 · via eBayPSA9↓below fair value by 14.6%
All grades matrix
Every grade we track for this printing. Click any column header to sort; the rightmost column jumps you to listings for that grade.
- PSA10$1371d ·0.0%7d ·0.0%30d ↑3.5%
- Pop
- 12
- Mcap
- $1.6K
- Evidence
- Limited
- Last
- $58
- PSA9$371d ·0.0%7d ↓0.1%30d ↑9.9%
- Pop
- 10
- Mcap
- $366
- Evidence
- Limited
- Last
- $22
- PSA8$291d ·0.0%7d ·0.0%30d ↓12.6%
- Pop
- 7
- Mcap
- $204
- Evidence
- Sparse
- Last
- -
| PSA10 | $137 | 12 | $1.6K | 0.0% | 0.0% | ↑up 3.5% | ↑up 30.3% | Limited | $587mo ago |
| PSA9 | $37 | 10 | $366 | 0.0% | ↓down 0.1% | ↑up 9.9% | ↑up 37.0% | Limited | $224mo ago |
| PSA8 | $29 | 7 | $204 | 0.0% | 0.0% | ↓down 12.6% | ↑up 33.7% | Sparse | - |
| PSA7 | $11 | 0 | - | ↓down 2.4% | ↓down 12.2% | ↑up 9.9% | ↑up 3.4% | Sparse | - |
| PSA6 | $6.49 | 0 | - | ↓down 3.4% | ↓down 16.9% | ↑up 13.1% | ↓down 8.2% | Sparse | - |
PSA population report
How Koffing's graded copies are spread across grades. Each bar is the number of copies graded at that grade; the percentage is that grade's share of the total graded population. These are recorded graded copies, not the total print run. A smaller population alone does not establish a price premium.29 graded copies of Koffing 1st Edition across 3 grades. The selected grade is highlighted.
PSA 9 makes up 34% of graded copies: 10 of 29. PSA 10 is the most common grade (41%).
Analysis
Koffing - 1st Edition at PSA 10 carries a TCGBerg fair value of $137 as of 2026-11-14. We track a TCGBerg fair value across 5 grades from Spanish Base Set, from PSA 6 up to PSA 10. A graded population of 12 copies sits behind the PSA 10 grade. The PSA 10 valuation rests on limited sales evidence. Over the past 30 days, the PSA 10 TCGBerg fair value has risen 3.5%.