It's used on the cover of Enigma: http://memory-beta.wikia.com/wiki/File:Enigma.jpgPretty sure that CG was the work of Doug Drexler, made in the same way that Picard's ready room model was from the TMP-DE Enterprise model. He detailed it's quick-and-dirty creation (for the Stargazer novel covers IIRC) on his now-defunct Drexfiles page.
The angle there makes the cheating less obvious, which is presumably why it was done that way.