I dont think there’s one without the watermark, as the artwork is sold to help support Allison who was an original g1 box art illustrator. This artist worked on G1 and G2 ponies from 1988-1998. Clipper has unveiled to us several other unproduced concept sets such as the fancy swirls (formly known as celestial ponies), and “date night” (actual set name unknown) concepts.
All art that Clipper sells is water marked, so we can continue to support the original artists, all proceeds go to the original artist such as Allison and Ruth.