Context: I always wondered what the mural in Quark’s was. Have read through the first two books of Deep Space 9: Millennium, and the novel offers two different (non-canon) possibilities.

Personally, it looks more like a Tholian to me but I like the implications of the alternative.

:::spoiler Mild Spoiler Gul Dukat procured it when he was in charge of Terok Nor. It was so large, the only place it would fit was Quark’s Bar, so that’s where it went. Dukat was proud of it, thinking it was a slain Tholian admiral. Rom laughs and later tells Quark it’s actually a depiction of Tellarite genitalia and is used to denote pleasure houses in the red light districts of Tellar Prime. Quark doesn’t know who is right, but he and Rom always salute the “Admiral” as a joke. :::