Apparently, long-time Fantasy artist Sanjulian did some Conan pieces that were intended for a calendar or some other project, but the project never came to fruition. There are over a dozen never-before seen images at the link below. Anyways, these are absolutely fantastic. I can't take credit for finding this, Bthom over at Conan.com posted the following:
Conan Art at Heritage Auctions
Fourteen previously unseen Conan the Barbarian paintings are highlighting Heritage’s Signature Comic and Comic Art Auction on November 13-15, 2008. These paintings of the legendary warrior Barbarian King were created by world famous fantasy artist Sanjulian. Sanjulian made several memorable covers for Conan reprints in the 1970s and ‘80s, but this art was made specifically for a Conan calendar. This allowed him to get more in depth with the character, bringing more focus and detail to the art.
here's the link: