Fans of Batman, and of Jock, take note: The acclaimed artists of such series as The Losers and the upcoming Wytches has donated a page from Detective Comics #871 for an eBay auction to benefit a 2-year-old with acute lymphoblastic leukemia.

Although Nathaniel's prognosis is said to be good, he faces a few years of treatment, during which time his parents will have to make regular trips to the hospital.

The original art is part of the 2010-2011 storyline Batman: The Black Mirror, by Scott Snyder and Jock, in which Dick Grayson must fight for his life against one of Gotham City's oldest evils. The current bid is £262 (about $423 U.S.); the auction ends Sept. 14.

Wytches, by Snyder and Jock, premieres Oct. 8 from Image Comics.