John Constantine Comics
Key issues, first appearances, and market estimates for 1 tracked comic.
Guide data reviewed July 2026. See our editorial policy and valuation disclaimer.
Tracked Issues
1
Highest Value
$280
Average Value
$280
First Appearance
1985
John Constantine comic value overview
This guide covers 1 tracked John Constantine appearance published between 1985 and 1985 by DC Comics. The records span 1 series: Swamp Thing and include one key issue flagged for collector interest. The current tracked average is $280, while the highest estimate is $280; actual sale prices depend on edition, grade, restoration, and timing.
Use the issue cards below to compare individual price ranges, then review the valuation methodology and disclaimer before treating an estimate as a selling price.
Swamp Thing #37 (1985)
John Constantine debuted in this historic issue published by DC Comics. Estimated market value ranges from $35 up to $1.4K.
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All Tracked Appearances
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Frequently Asked Questions
What is the most valuable John Constantine comic book?
The top-valued comic issue featuring John Constantine in our database is Swamp Thing #37 (1985), estimated at $280 depending on physical condition.
When did John Constantine make their first appearance?
John Constantine debuted in Swamp Thing #37 in 1985, published by DC Comics.