Swamp Thing #37 (1985)
Landmark issue Swamp Thing #37 (1985) published by DC Comics. Key significance: First appearance of John Constantine (Hellblazer) by Alan Moore.
Estimated Market Value
Live Market Benchmark$280
Value Range: $35 (Low Raw) – $1.4K (CGC High-Grade)
Guide data reviewed July 2026. Estimates are informational and vary by edition, condition, and completed-sale timing. Read the valuation disclaimer.
🏛️ CGC Census & Population Rarity
Total Graded copies
1,452
CGC 9.8 Population
243
Price by Condition (CGC Grade Matrix)
| Condition | Estimated Value |
|---|---|
| Poor (P 1.0) | $35 |
| Good (G 2.0) | $56 |
| Fine (F 6.0) | $140 |
| Very Fine (VF 8.0) | $224 |
| Near Mint (NM 9.4) | $420 |
| Mint (M 9.9) | $1.4K |
* Values are weighted market estimates based on recent auction sales and CGC slab history.
Variant & Edition Multipliers
Direct Edition
Standard comic shop direct distribution.
Newsstand Edition
Barcoded newsstand rack edition with lower survival rate.
Recent Verified Sales Log
| Date | Grade | Marketplace | Price |
|---|---|---|---|
| 2026-06-12 | CGC 9.6 | eBay | $392 |
| 2026-04-05 | CGC 9.4 | Heritage Auctions | $308 |
Key Issue Specifications
- Series
- Swamp Thing
- Issue
- #37
- Year
- 1985
- Publisher
- DC Comics
- Writer
- Alan Moore
- Cover Artist
- Stephen Bissette
Characters Featured
Related Key Comics
Action Comics #1
DC Comics · 1938
First appearance of Superman (Clark Kent) & Lois Lane. Holy Grail of comics.
Est. Value
$3.2M
Detective Comics #27
DC Comics · 1939
First appearance of Batman (Bruce Wayne) & Commissioner Gordon.
Est. Value
$1.8M
Batman #1
DC Comics · 1940
First solo Batman title; First appearance of The Joker and Catwoman (The Cat).
Est. Value
$550.0K
Sensation Comics #1
DC Comics · 1942
First cover appearance of Wonder Woman.
Est. Value
$120.0K
Swamp Thing #37 FAQ
How much is Swamp Thing #37 worth?
Swamp Thing #37 (1985) has an estimated average market value of $280, ranging from $35 in low raw condition to $1.4K or higher in top CGC graded condition.
What is a high-grade CGC copy of Swamp Thing #37 worth?
In Near Mint (9.4+) condition, Swamp Thing #37 is valued at approximately $420, with Mint (9.9/10.0) copies reaching up to $1.4K.
Why is Swamp Thing #37 a key comic book?
Swamp Thing #37 is a key issue because: First appearance of John Constantine (Hellblazer) by Alan Moore. Landmark issue Swamp Thing #37 (1985) published by DC Comics. Key significance: First appearance of John Constantine (Hellblazer) by Alan Moore.