Publisher: DC Comics | 1 issue tracked
Guide data reviewed July 2026. See our editorial policy and valuation disclaimer.
This DC Comics price guide covers 1 tracked Swamp Thing issue published between 1985 and 1985. 1 issue is marked as key issue in the current dataset, and the highest tracked estimate is $280 with an average of $280. The guide includes 2 recorded sales across its tracked issues. These are guide estimates, not guaranteed sale prices; condition, printing, restoration, variant status, and market timing can change the result.
Open an issue below for its condition-by-condition value table and sales context, or read the valuation disclaimer to understand how to use the figures.
These highlighted issues have the strongest current value signals in this series. Open each guide to compare its condition range, sales records, and collector notes.
Key issue
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.
Estimated value: $280
Tracked Issues
1
Top Key Value
$280
Average Issue Value
$280
| Issue | Year | Key Note | Est. Value |
|---|---|---|---|
| #37 | 1985 | First appearance of John Constantine (Hellblazer) by Alan Moore | $280 |
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