Adventures into the Unknown #20 (1951) — Comic Book Value
Adventures Into The UnknownWhat Adventures into the Unknown #20 (1951) is worth — ungraded and CGC graded (6.0, 8.0).
Adventures into the Unknown #20 (1951) value — Ungraded $45 · Grade 6.0 $40 · Grade 8.0 $267. Prices updated August 2026.
Series · Adventures Into The Unknown
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Value by grade
$45
Ungraded
+-11%
$40
Grade 6.0
5.9×
$267
Grade 8.0
Real sold prices per grade — the Grade 8.0 premium on this card is 5.9× raw.
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Item details
- Series
- Adventures Into The Unknown
Adventures into the Unknown #20 (1951) comic value
An ungraded copy of Adventures into the Unknown #20 (1951) averages around $45. A CGC 6.0 runs about $40, and a CGC 8.0 commands $267.
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 | $45 | eBay sold comps |
| Grade 6.0 | $40 | eBay sold comps |
| Grade 8.0 | $267 | eBay sold comps |
Frequently asked questions
- What is the best deal for this comic?
- If you want the lowest entry point, the ungraded copy is available for $45. For investment potential, the Grade 8.0 is priced at $264.
- How much is a lower-graded copy worth?
- A Grade 6.0 copy of Adventures into the Unknown #20 is listed for $40.
- Is the value of this comic heavily dependent on its grade?
- Yes, the price jumps significantly from the ungraded $45 to the Grade 8.0's $264.