Found this in a local ad. It's a TI99/4a complete with 11 cartridges (including one being "TI Invaders" !), two joysticks, its manual, etc.
It still boots (but has a few display glitches).
I'm very happy and how not to fall in love with the "Solid State Software" writing on the front
Keys are double-shots. The switch is original and I had never seen one like this.
I had the same computer for a few days in 1984 or so and always wanted one: now it's done!