Having seen the extra pictures I can confirm it is the CT 36 E AC (or CTL 36 E AC in Europe).
Still gotta wonder why the stickers are missing. Maybe it is just that parts are replaced because they were broken. And maybe not, but there is really no way to find out as far as I know. The black part can break easily, but the grey part not.
Googling for pictures of Festool tools is of little use since even Festool themselves can show the wrong pictures on their website. The CT 36 E AC has 3 knobs as shown here. There is a model with a 4th green knob, but that's the more expensive CTM 36 E AC model which has an extra air flow sensor, but is not sold in the USA.