Iron Boulder #71, Reverse Holo, Stellar Crown
- Card number: #71/142
- ·Rarity: Rare
A CGC Gem Mint 10 Iron Boulder #71 Reverse Holo from Stellar Crown has a TCGBerg fair value of $20 as of Nov 15, 2026. It rests on 1 recorded sale, the latest on Aug 12, 2026. Sales evidence is sparse, so treat this value as a rough estimate.
TCGBerg Algorithm (estimated from recorded sales).
1 sale · latest Aug 12, 2026
- Population · CGC Gem Mint 10
- -
- Market cap
- -
- Volatility
- -
- YTD
- -
- Sales evidence
- Sparse
TCGBerg fair value · CGC Gem Mint 10
$20
Based on 1 recorded sale. Latest sale: Aug 12, 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 CGC Gem Mint 10. 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 value rests on 1 recorded CGC Gem Mint 10 sale. Its confidence band runs from $15 to $25. With sparse 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.
- Raw MP$0.25Ungraded · market price
- Raw NM$0.23Ungraded · TCGBerg fair value
- Raw LP$0.17Ungraded · TCGBerg fair value
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 7, 2026 | Raw | tcgplayer | $0.25 | above fair value by +38.9% |
| Oct 31, 2026 | Raw | tcgplayer | $0.09 | below fair value by -50.0% |
| Oct 28, 2026 | Raw | tcgplayer | $0.25 | above fair value by +38.9% |
| Oct 28, 2026 | Raw | tcgplayer | $0.15 | below fair value by -16.7% |
| Oct 27, 2026 | Raw | tcgplayer | $0.09 | below fair value by -50.0% |
- $0.25Nov 7, 2026 · via tcgplayerRaw↑above fair value by 38.9%
- $0.09Oct 31, 2026 · via tcgplayerRaw↓below fair value by 50.0%
- $0.25Oct 28, 2026 · via tcgplayerRaw↑above fair value by 38.9%
- $0.15Oct 28, 2026 · via tcgplayerRaw↓below fair value by 16.7%
- $0.09Oct 27, 2026 · via tcgplayerRaw↓below fair value by 50.0%
| Oct 27, 2026 | Raw | tcgplayer | $0.49 | above fair value by +172.2% |
| Oct 26, 2026 | Raw | tcgplayer | $0.24 | above fair value by +33.3% |
| Oct 26, 2026 | Raw | tcgplayer | $0.10 | below fair value by -44.4% |
- $0.49Raw↑above fair value by 172.2%
- $0.24Raw↑above fair value by 33.3%
- $0.10Raw↓below fair value by 44.4%
15 more sales with Pro
Up to 20 recent sales, each with its venue and its gap to fair value.
↓Includes a sale 55.0% 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.
- CGC Gem Mint 10$201d -7d -30d -
- Pop
- -
- Mcap
- -
- Evidence
- Sparse
- Last
- -
- Raw$0.231d -7d ↑27.8%30d ↓4.2%
- Pop
- -
- Mcap
- -
- Evidence
- Strong
- Last
- $0.25
| Listings | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| CGC Gem Mint 10 | $20 | - | - | - | - | - | - | Sparse | - | |
| Raw | $0.23 | - | - | - | ↑up 27.8% | ↓down 4.2% | - | Strong | $0.251w ago |
Graded population report
How Iron Boulder'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.12 graded copies of Iron Boulder Reverse Holo across 4 grades.
PSA 9 is the most common grade (67%).
Analysis
Iron Boulder - Reverse Holo at CGC Gem Mint 10 carries a TCGBerg fair value of $20 as of 2026-11-14. The CGC Gem Mint 10 valuation rests on sparse sales evidence.