Hellboy by Dan Mumford x/50 Screen Print Movie Art Poster 18″ x 24″. 8-color screenprint. Size: 18″ x 24″. Signed and numbered. Limited edition of 50. Excellent condition! Add to Favorite Sellers. Hellboy by Dan Mumford x/50 Screen Print Movie Art Poster 18″ x 24″. 18″ x 24″ Limited Edition of 50, Dan Mumford.