The latest in a long line of historical comic-related auctions is coming up at Heritage Auctions' next event --a never-before-seen pre-Peanuts comic strip by Charles Schulz. Here it is:

Created in the late 40s between Schulz' first work Li'l Folks and the debut of Peanuts in 1950, it contains characters that bear more than a passing resemblance to future Peanuts stars Charlie Brown and Snoopy. The artwork is being offered by the family of the late Frieda Rich, a lifelong friend of Schulz who served as the inspiration for the Frieda character with the famous "naturally curly hair."

This will be one of many pieces that'll hit Heritage Auctions' auction block on May 5, and the organizers expect this piece to bring more than $20,000 alone.