Koffing #51, Shadowless, Base Set
- Card number: #51/102
- ·Rarity: Common
- ·Finish: Non-Holo
A PSA 9 Koffing #51 Shadowless from Base Set has a TCGBerg fair value of $48 as of Nov 14, 2026. TCGBerg has recorded 39 PSA 9 sales of this card, the latest on Nov 2, 2026. PSA has graded 359 copies at PSA 9.
TCGBerg Algorithm (estimated from recorded sales).
- Population · PSA 9
- 359
- Market cap
- $17.3K
- Volatility
- 5.3%
- YTD
- ↑ 43.4%
- Sales evidence
- Very strong
TCGBerg fair value · PSA 9
$48
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, $75 on Nov 2, 2026, sits 55.5% above the $48 fair value. The value weighs 30 PSA 9 sales from the past year, not the latest one alone. The latest sale ran above the recent run: the last 5 PSA 9 sales averaged $60, within 23.5% of the value. Its confidence band runs from $45 to $51. A PSA 10 ($375) is worth 7.8 times a PSA 9 ($48). Over the past 30 days the PSA 9 value has risen 10.9%.
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.
- Raw NM$7.80Ungraded · market price
- Raw LP$5.51Ungraded · market price
- Raw MP$3.03Ungraded · market price
- Raw HP$2.92Ungraded · market price
- Raw Damaged$1.84Ungraded · market price
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
20 trackedEach sale against the grade's fair value on the day it sold.
| Date | Grade | Venue | Price | vs fair value |
|---|---|---|---|---|
| Nov 2, 2026 | PSA9 | eBay | $75 | above fair value by +53.8% |
| Oct 24, 2026 | PSA9 | eBay | $47 | above fair value by +5.4% |
| Oct 11, 2026 | PSA9 | eBay | $67 | above fair value by +54.5% |
| Oct 9, 2026 | PSA5 | eBay | $24 | above fair value by +5.6% |
| Oct 8, 2026 | PSA7 | eBay | $31 | above fair value by +3.3% |
- $75Nov 2, 2026 · via eBayPSA9↑above fair value by 53.8%
- $47Oct 24, 2026 · via eBayPSA9↑above fair value by 5.4%
- $67Oct 11, 2026 · via eBayPSA9↑above fair value by 54.5%
- $24Oct 9, 2026 · via eBayPSA5↑above fair value by 5.6%
- $31Oct 8, 2026 · via eBayPSA7↑above fair value by 3.3%
| Oct 8, 2026 | PSA8 | eBay | $30 | below fair value by -5.3% |
| Oct 7, 2026 | PSA9 | eBay | $34 | below fair value by -21.5% |
| Oct 3, 2026 | PSA1 | eBay | $51 | above fair value by +147.6% |
- $30PSA8↓below fair value by 5.3%
- $34PSA9↓below fair value by 21.5%
- $51PSA1↑above fair value by 147.6%
15 more sales with Pro
Up to 20 recent sales, each with its venue and its gap to fair value.
↓Includes a sale 54.1% below fair value
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$3751d ·0.0%7d ·0.0%30d ↑0.9%
- Pop
- 161
- Mcap
- $60.4K
- Evidence
- Limited
- Last
- $140
- PSA9$481d ↓0.1%7d ↓2.0%30d ↑10.9%
- Pop
- 359
- Mcap
- $17.3K
- Evidence
- Very strong
- Last
- $75
- PSA8$331d ↑3.5%7d ↑12.3%30d ↑4.5%
- Pop
- 127
- Mcap
- $4.2K
- Evidence
- Moderate
- Last
- $30
| Listings | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| PSA10 | $375 | 161 | $60.4K | 0.0% | 0.0% | ↑up 0.9% | ↑up 18.1% | Limited | $1405mo ago | |
| PSA9 | $48 | 359 | $17.3K | ↓down 0.1% | ↓down 2.0% | ↑up 10.9% | ↑up 46.7% | Very strong | $752w ago | |
| PSA8 | $33 | 127 | $4.2K | ↑up 3.5% | ↑up 12.3% | ↑up 4.5% | ↑up 50.7% | Moderate | $301mo ago | |
| PSA7 | $30 | 64 | $2.0K | ↓down 1.8% | ↑up 2.9% | ↑up 1.4% | ↑up 38.5% | Limited | $311mo ago | |
| PSA6 | $23 | 38 | $887 | 0.0% | ↑up 0.1% | ↓down 1.4% | ↑up 14.2% | Limited | $8.506mo ago | |
| PSA5 | $23 | 43 | - | 0.0% | ↑up 0.1% | ↓down 1.4% | ↑up 14.2% | Moderate | $241mo ago | |
| PSA4 | $22 | 20 | - | ↓down 0.4% | ↓down 2.2% | ↑up 0.9% | ↑up 26.6% | Sparse | $359mo ago | |
| PSA2 | $21 | 2 | - | ↓down 0.5% | ↓down 2.2% | ↑up 0.9% | ↑up 26.5% | Sparse | $394mo ago | |
| PSA1 | $21 | 2 | - | ↓down 0.4% | ↓down 2.2% | ↑up 1.0% | ↑up 26.6% | Sparse | $511mo ago | |
| Raw | $7.80 | - | - | ↑up 2.1% | ↑up 1.0% | ↑up 0.7% | ↑up 1.0% | - | - |
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.816 graded copies of Koffing Shadowless across 9 grades. The selected grade is highlighted.
PSA 9 makes up 44% of graded copies: 359 of 816. It’s the most common grade for this card.
Analysis
Koffing - Shadowless Normal at PSA 10 carries a TCGBerg fair value of $375 as of 2026-11-13. We track a TCGBerg fair value across 9 grades from Base Set, from PSA 1 up to PSA 10. A graded population of 161 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 0.9%.