The Cheyenne-class studio model was a "kitbash" design study and filming model designed by Ed Miarecki and Michael Okuda and built by Miarecki for the graveyard scene in "The Best of Both Worlds, Part II."  It used parts from the smaller scale AMT/ErtlUSS Enterprise-D model kit saucer section, a bridge module from the larger Enterprise kit, and commercially-available highlighter markers for warp nacelles. Okuda commented,"I think the fourth was the Cheyenne-class U.S.S. Ahwahnee. (Again, without my notes, I'm not entirely sure). This was a scaled-down Galaxy saucer with four nacelles, arranged in a manner similar to the Constellation. Ed made the nacelles from marker pens. (...) There aren't many more photos of the final versions of the Miarecki study models. The Cheyenne-class ship on the Collectable Card Game (and other card sets) was, almost certainly, a photo that I took. It was probably part of the photos that I took for that slideshow." 
Okuda is referring to the slideshows on the various BoBW models shown at conventions in 1991.