When do we ever see signs for anything other
than "Turbolift 7"? I haven't made an exhaustive structinization of TOS, but it always seemed that "7" was the only number used? I suppose it could pass for a "2" in a fuzzy shot.
My thoughts on the "Turbolift 7" debacle? It's a model number.
These are the latest turbolifts in Starfleet, fully voice controlled and the fastest yet! Look out Turbolift 6, here comes TURBOLIFT 7