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Underground Sea
Revised Edition · 290
Underground Sea 290 (Revised Edition dual land, CGC 9): last verified sale $843.75 on Aug 12, 2026 (Heritage Auctions). Not enough verified sales in the last 90 days for a market price. Source: CardVolume, cardvolume.com/magic/revised-edition/underground-sea/, as of Sep 27, 2026.
Underground Sea 290 (Revised Edition dual land, CGC 7.5): last verified sale $600.00 on Apr 22, 2026 (Heritage Auctions). Not enough verified sales in the last 90 days for a market price. Source: CardVolume, cardvolume.com/magic/revised-edition/underground-sea/, as of Sep 27, 2026.
Underground Sea 290 (Revised Edition dual land, CGC 6): last verified sale $875.00 on Aug 26, 2026 (Heritage Auctions). Not enough verified sales in the last 90 days for a market price. Source: CardVolume, cardvolume.com/magic/revised-edition/underground-sea/, as of Sep 27, 2026.
Underground Sea 290 (Revised Edition dual land, Raw · VG/EX): last verified sale $750.00 on Jun 4, 2025 (Heritage Auctions). Not enough verified sales in the last 90 days for a market price. Source: CardVolume, cardvolume.com/magic/revised-edition/underground-sea/, as of Sep 27, 2026.
Underground Sea 290 (Revised Edition dual land, Raw · EX/NM+): last verified sale $575.00 on Jun 25, 2025 (Heritage Auctions). Not enough verified sales in the last 90 days for a market price. Source: CardVolume, cardvolume.com/magic/revised-edition/underground-sea/, as of Sep 27, 2026.
Values as of Sep 27, 2026 in USD. Market price = median of at least 5 qualifying sales of this exact version and grade in the last 90 days. Methodology
Key facts
- CardVolume lists 5 verified sales of the Underground Sea 290 (Revised Edition) as of September 27, 2026.
- No grade has the 5 verified sales in 90 days needed for a market price; the most recent verified sale was $875.00 for a Revised Edition dual land CGC 6 on August 26, 2026 at Heritage Auctions.
- The highest verified sale on record is $875.00 for a Revised Edition dual land CGC 6 on August 26, 2026 at Heritage Auctions.
Updated · Only verified or cross-checked sales count · How we verify · Data: Markdown, JSON
Sales history
| Date | Version | Grade | Price | Venue | Status | Source |
|---|---|---|---|---|---|---|
| Aug 26, 2026 | Revised Edition dual land | CGC 6 | $875.00 incl. buyer's premium | Heritage Auctions auction Heritage archive result; CGC EX/NM 6, auction 332634, lot 59011. | Cross-checked | Open |
| Aug 12, 2026 | Revised Edition dual land | CGC 9 | $843.75 incl. buyer's premium | Heritage Auctions auction Heritage archive result; auction 332632, lot 57010. | Cross-checked | Open |
| Apr 22, 2026 | Revised Edition dual land | CGC 7.5 | $600.00 incl. buyer's premium | Heritage Auctions auction Heritage archive result; CGC Near Mint+ 7.5, auction 332616, lot 59016. | Cross-checked | Open |
| Jun 25, 2025 | Revised Edition dual land | Raw · EX/NM+ | $575.00 incl. buyer's premium | Heritage Auctions auction Heritage archive result; raw condition EX/NM+, auction 332526, lot 59020. | Cross-checked | Open |
| Jun 4, 2025 | Revised Edition dual land | Raw · VG/EX | $750.00 incl. buyer's premium | Heritage Auctions auction Heritage archive result; raw condition VG/EX, auction 332523, lot 56030. | Cross-checked | Open |
Verified: an editor or automated check confirmed the figure on the source page. Cross-checked: an independent second research pass reopened the source and confirmed it. Reported: cited by research but not re-checked; never used in metrics. Asking prices are never listed here.
Raw-condition estimates
Raw-condition estimates from Scrydex based on TCGplayer marketplace data, updated Sep 27, 2026. The method is not published, so these are shown separately and never used in CardVolume’s market price, which comes only from documented sales. Raw estimates are not comparable with graded sale prices.
| Condition / grade | Low | Market | High | 30-day |
|---|---|---|---|---|
| Raw · NM | $1,100 | $1,081 | — | |
| Raw · LP | $897.00 | $874.73 | — | |
| Raw · MP | $765.00 | $762.75 | — | |
| Raw · HP | $744.95 | $718.77 | — | |
| Raw · DM | $701.65 | $682.88 | — |
Data: Scrydex. Provider estimates are not sales records.
Price chart
Revised Edition dual land · CGC 9
Fewer than two qualifying sales for CGC 9; no chart.
Revised Edition dual land · CGC 7.5
Fewer than two qualifying sales for CGC 7.5; no chart.
Revised Edition dual land · CGC 6
Fewer than two qualifying sales for CGC 6; no chart.
Revised Edition dual land · Raw · VG/EX
Fewer than two qualifying sales for Raw · VG/EX; no chart.
Revised Edition dual land · Raw · EX/NM+
Fewer than two qualifying sales for Raw · EX/NM+; no chart.
Graded population
No sourced population figure yet.
Population counts copies graded by one company in one grade. It is not a print run and it grows with every submission. Why population is not print run
Grading math for this card
Prefilled with the latest qualifying sale for each grade where one exists. Replace any value with your own. We never suggest what grade your copy will get.
Formula from Grading: condition, uncertainty, and economics: grading pays only if your honest chance of the high grade exceeds (raw net + cost − other-outcome net) ÷ (high-grade net − other-outcome net). The 13% fee is an editable assumption, not a quoted tariff.
About Underground Sea
Underground Sea is the blue-black dual land from Revised Edition. Collectors and players search for it because it is a Reserved List dual land with heavy format-recognition and many visually similar but separate printings.
Why this card matters
Verified factUnderground Sea is one of the original dual lands and is listed in Wizards of the Coast's Reserved List policy under Limited Edition. The Revised copy is not the first printing, but it is a major white-border tournament-era version that many buyers search separately from Alpha, Beta, and Unlimited. Its demand can include player utility, Old School or Eternal-format interest, and set collecting, so CardVolume should treat a Revised sale as evidence only for the Revised dual-land variant, not for every Underground Sea printing. [1][2]
Identifying the exact version
AnalysisThe Revised Edition version is a white-border rare land with no expansion symbol, Rob Alexander artwork, and the Island Swamp type line. Current catalog references identify it as 3ED #290. Do not merge it with foreign black-border, Summer Magic, Collector's Edition, International Edition, or 30th Anniversary treatments. A listing photo should confirm the border, language, copyright-era layout, back, and condition. The same card name appears on multiple versions, so the set name and physical treatment are mandatory identity fields. [1][4]
What moves the price between versions and grades
Verified factThe verified Heritage records show that Revised Underground Sea sales vary by raw condition and slab grade, and the sequence is not perfectly ordered by grade because timing, venue, photos, and bidder pool matter. A CGC Mint 9 sale, a CGC EX/NM 6 sale, and raw VG/EX or EX/NM+ sales should not be averaged together without a clear condition adjustment. The correct process is to group comps by exact printing first, then separate raw condition, grader, grade, and sale venue. [3][5][6]
Authenticity checks
Verified factCompare against exact Revised references, checking the white border, no expansion symbol, Rob Alexander credit, rules text, card back, print registration, and known Revised color characteristics. Use several checks together and avoid destructive tests. For slabs, match the cert record, label, card identity, and seller photos, but remember that copied cert numbers exist. Because dual lands are frequently counterfeited, unresolved doubts should be handled by a specialist review rather than by relying on a single green-dot or light test. [7]
What people get wrong about this card
Based on the claims our guides decline to adopt: Risk and strategy · Case studies and corrections
Supply events
- Oct 4, 2022 · new treatmentWizards of the Coast's 30th Anniversary Edition card image gallery included Underground Sea as a later commemorative treatment, separate from Revised Edition. Source
“Reprint” can mean four different things; each affects a different pool of substitutes. Read more
Frequently asked questions
How much did a CGC 9 Revised Underground Sea sell for?
What is the card number for Revised Underground Sea?
Is Underground Sea on the Reserved List?
How do I tell Revised from Unlimited Underground Sea?
Are raw sales comparable to graded sales?
How many PSA 10 Revised Underground Seas exist?
Sources
- Underground Sea (3ED) #290 — Dragon Shield MTG Card Manager (accessed Sep 26, 2026)
- Official Reprint Policy — Wizards of the Coast (accessed Sep 26, 2026)
- Heritage Auctions Search: Revised Dual Lands August 12, 2026 — Heritage Auctions (accessed Sep 26, 2026)
- Magic 30th Anniversary Edition Card Image Gallery — Wizards of the Coast (accessed Sep 26, 2026)
- Heritage Auctions Search: Underground Sea Raw June 2025 — Heritage Auctions (accessed Sep 26, 2026)
- Heritage Auctions Search: Underground Sea CGC EX/NM 6 August 26, 2026 — Heritage Auctions (accessed Sep 26, 2026)
- PSA Certification Verification — PSA (accessed Sep 26, 2026)
Not yet established
- No PSA or CGC population source with a clear source-stated as-of date was established.
- More recent primary raw eBay listings were not included because opened primary listing pages were not verified.
Research: Codex research pass (live web) · automated source checks · independent cross-check · generated Sep 26, 2026 · reviewed by CardVolume editorial (owner-approved) on Sep 27, 2026 · updated Sep 26, 2026. Found an error? Report it.
