Lost Gallifrey (The Taking of Planet 5)

One of the many Gallifreys existing during the War in Heaven was lost during the Battle of Mutter's Cluster, bringing the official count down to nine. (PROSE: The Taking of Planet 5)

Behind the scenes
Within the novel The Taking of Planet 5, it was altogether unclear whether this Gallifrey was utterly destroyed, or if it was "lost" in a similar way to Ardethe or New Alexandria. The nobel was also unclear as to if this "lost gallifrey" was a duplicate, or if it was the original previously mentioned by Homunculette in Alien Bodies.