Three super-rare Wonder Woman comic books—including issue No. 1—are about to be auctioned off on eBay.

The comics being auctioned (separately) are Wonder Woman No. 1, Sensational Comics No. 1, and All Star Comics No. 8, all featuring some of the earliest representations of DC Comics’s timeless superhero. The rare finds are the highest quality ever found for these items, and their existence wasn't public before the auction launched.

All the comics illuminate Wonder Woman's origins within the comic book world. Published in December 1941, All Star Comics No. 8 marked the first appearance of Wonder Woman. Her first cover image was on Sensation Comics No. 1, originally released in January 1942. Her first full-length comic book, Wonder Woman No. 1, came out in July 1942.

In terms of condition, all of the copies featured in this sale are the highest-rated editions ever found according to CGC, a vintage comic assessment organization. (They got ratings of 9.0 or higher out of 10, meaning very fine or near-mint condition.)

The comics are on sale from comics shop owner Darren Adams, who sold a copy of the first Superman comic in 2014 for a historic $3.2 million. The copy of the first issue of Wonder Woman was originally sent to Harper’s Magazine, only to be put in a cabinet and forgotten. The other two comics were bought from a collector.

The auction starts on August 17 at 5 p.m. Pacific time / 8 p.m. Eastern time. A portion of the proceeds will go to the non-profit Trafficking Hope. Watch Adams discuss the comics up for sale in the video below: