Publisher

Publication Types

Era

Cover Types

Characters

Ken Ernst

DC Sep 1939

Detective Comics #31

Detective Comics #31
View Series Variants (3)
Low
$53K
Mid
$140K
High
$410K
View on eBay
1st appearance of The Monk, Batman's first costumed enemy
1st appearance of Julie Madison, Bruce Wayne's girlfriend
5th appearance of Batman
Debut of the Batgyro, an airborn vehicle later replaced by the Batplane
Debut of the Batarang
Stories take place in New York City

Clicking on the eBay link and making a purchase may result in this site earning a commission from the eBay Partner Network.

No Results Found

Try adjusting the "Variants" search filter above, or disable "Keys Only" to see all issues.

  • Variant Covers ()

Subscribe to Unlock

View Graded Pricing

Unlock graded pricing and other premium features by subscribing to Key Collector Comics.

Subscribe Learn what's included

Price Guide

Prices are estimates based on recent sales data and may not reflect actual market value. Key Collector Comics does not guarantee the accuracy of any pricing information.