Roper Double Wall Oven (Gas) with Rotisserie

Roper Double Wall Oven (Gas) with Rotisserie.  I think it's from the 70's.  It's a wall unit with top and bottom oven (gas).  The bottom has a rotisserie attachment / broiler.  It has a analog dial clock and thermastat.

I don't think it's ever been used.  It doesn't have grease anywhere (not even glass) which you would expect from usage.  It works, but I think the thermastat might not be working as it doesn't maintain heat (gas shuts down before reaching temperature).

The model number is: 1075106

Good