I think they refer to the front sofa area as a "slide" in the 3124SL models (and probably others) where the sofa slides forward over the propane tanks. I've seen this terminology used in TM's marketing material.
I've never seen mention of a traditional "slide-out" on any TM model otherwise.
Looks nice. I A/C looks like it is over queen size bed which is odd. I was always a little worried about buying a unit close to the ocean due to rust but if it were well maintained it could be a steal.
Just took another look at the picture of the exterior of the unit and it does say 3023 on the side. Could the factory have put the wrong graphics on it? It IS the same floor plan as the 3124KS and I'm pretty sure they made the 3124KS in 2001. 3023 has no living room slide. How odd.
It appears to be a custom 3023. It has the same floor plan as the 3124KS (with extended kitchen base cabinet and counter space), but the bed is queen instead of king.