There should be a black painted section under the front of the seat that carries through the line of the carbon airbox. Have a look at the other even more expensive R on autotrader to see what I mean.
The black portion is not painted it is a sticker that was lacquered over and I believe this may have only been on 2002 bikes that had full Ohlins etc.. This bike, as mentioned above, is not the most desirable model (as it is a 2001) and the price, seems to me, to be excessive for a 2001 bike and is really more leaning towards the full Ohlins 2002 model.
I sold mine to Robinsons of Rochdale a couple of years ago, maybe longer but they said they were going to keep it so not sure if they did or if they sold it. It was like new !
I posted one on this thread and I can contact the seller to see if he still has it if your interested 748 - Ducati 748r Wanted | Ducati Forum