Adventures into the Unknown #21 (1951) — Comic Book Value
Adventures Into The UnknownWhat Adventures into the Unknown #21 (1951) is worth — ungraded and CGC graded (6.0, 8.0).
Adventures into the Unknown #21 (1951) value — Ungraded $84 · Grade 6.0 $212 · Grade 8.0 $237. Prices updated August 2026.
Series · Adventures Into The Unknown
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Value by grade
$84
Ungraded
2.5×
$212
Grade 6.0
2.8×
$237
Grade 8.0
Real sold prices per grade — the Grade 8.0 premium on this card is 2.8× raw.
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Item details
- Series
- Adventures Into The Unknown
Adventures into the Unknown #21 (1951) comic value
An ungraded copy of Adventures into the Unknown #21 (1951) averages around $84. A CGC 6.0 runs about $212, and a CGC 8.0 commands $237.
What drives the price
Grade is everything in comics — spine ticks, page color, and restoration decide the number, and the jump from raw to high grade can be 10×+. Key issues (first appearances, origins, deaths) carry the biggest premiums, and early printings beat reprints.
Price guide
Sold values by grade vs. what sellers ask today
| Condition | Value | Based on |
|---|---|---|
| Ungraded | $84 | eBay sold comps |
| Grade 6.0 | $212 | eBay sold comps |
| Grade 8.0 | $237 | eBay sold comps |
Frequently asked questions
- What is the starting price for this comic?
- The ungraded version of Adventures into the Unknown #21 is currently valued at $106.
- How much is a high-grade copy worth?
- A comic graded at an 8.0 is listed with a resale value of $238.
- Is the condition important for the price?
- Yes, condition significantly impacts value; a Grade 6.0 is priced at $213, compared to the ungraded listing.