I recently acquired a Commodore PC 10-S (yes, the letter S) and I am currently looking for any information about this "S model". We used to have a Commodore PC 10-II (w/2x360k drives) in the past and this S variant seems to be quite similar.
Can anyone help me to find a meaning of the S marking on the computer case?
PS. Pictures available here: https://pekkaleppaluoto.com/accidental-empires/commodore-pc-10-s/