Publisher: DC Comics
Cover Date: October 1948
Cover Price: $0.10
Penciller: Curt Douglas Swan
Cover Artist: James Winslow Mortimer
First Appearance: The Riddler (Edward Nigma)
Detective Comics (1937) #140 Value FAQ
How much is Detective Comics (1937) #140 worth?
As of October 2026, a near-mint (9.4) raw copy is valued around $50,000.00; lower grades range from ~$5,000.00 (Good) to ~$35,000.00 (Very Fine).
Is Detective Comics (1937) #140 a key issue?
Yes — it is a key issue, featuring the first appearance of The Riddler (Edward Nigma).
Who created Detective Comics (1937) #140?
Detective Comics (1937) #140 was pencilled by Curt Douglas Swan, with a cover by James Winslow Mortimer.
When was Detective Comics (1937) #140 published?
DC Comics published it with a October 1948 cover date, originally priced at $0.10.
What is a high-grade copy of Detective Comics (1937) #140 worth?
A Near Mint (9.4) raw copy runs about $50,000.00. Graded (CGC) copies typically sell for more — available to members.
Price guide
Estimated values by grade, full graded (slab) prices, historical trends, and recent eBay sales for this issue.
Detective Comics (1937) #140 Value — Quick Raw Price Guide
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