Coincidentally, I just bought one of these 23" ST800 bikes, but in lesser condition.

Mine (in metallic green) had some kind of failure of the paint, much of which seems raised but still intact.

The racks and Brooks are gone, the stem is a longer 10cm, and the middle ring was wrongly changed to a smaller 34t size (and with an LX derailer installed, perhaps to correct it's expectedly deficient shifting performance to and from the smaller middle ring).

It's a nice bike, with Superbe, Sugino AT and top-level (NGC cantilever) brakes, probably take a while to sell though.
Almost begs to be parted out if I needed the 27" Mod58 wheelset for another project.
I will perhaps take it for another ride, perhaps with a road double crank installed(?). Gearing is too short as it is with a 48-13 top gear, ...and I already have a couple of (user and beater) touring bikes.