Thunderbird 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
$4.2K
Average Value
$4.2K
First Appearance
1975
Thunderbird comic value overview
This guide covers 1 tracked Thunderbird appearance published between 1975 and 1975 by Marvel. The records span 1 series: Giant-Size X-Men and include one key issue flagged for collector interest. The current tracked average is $4.2K, while the highest estimate is $4.2K; 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.
Giant-Size X-Men #1 (1975)
Thunderbird debuted in this historic issue published by Marvel. Estimated market value ranges from $450 up to $22.0K.
🔑 Key Issues
All Tracked Appearances
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Frequently Asked Questions
What is the most valuable Thunderbird comic book?
The top-valued comic issue featuring Thunderbird in our database is Giant-Size X-Men #1 (1975), estimated at $4.2K depending on physical condition.
When did Thunderbird make their first appearance?
Thunderbird debuted in Giant-Size X-Men #1 in 1975, published by Marvel.