Hi all,
I just noticed this weird looking 1040STF for sale on-line: https://www.ricardo.ch/fr/a/atari-1040-st-f-m … aus-1309348338/

I've never seen a 520 or 1040 with that type of keyboard before, and online pictures all look different from this one.

Is it a somewhat rare model ? Or perhaps it went through an aftermarket keyboard replacement?