01-0852 has a last 3 VIN of 910, which matches both the Saleen tag and door sticker pictures. It's supercharged, with mats, chrome wheels and a black convertible top. The UA paint code on the door sticker means it has black paint. Based on the pictures you provided, it appears legit...
I had no problem bringing the car up under
www.nadaguides.com [&:]. They say a 2001 281SC vert is:
Low Retail - $20700 / Average Retail - $25500 / High Retail - $26900