This is an Epson Expression 100000XL - Large Format Flatbed Scanner.
I used this when i was in art school at CCAD to scan large drawings into my computer and finish them digitally. I do not need the scanner anymore as I no longer do this type of work. The scanner is still in great condition and is a professional grade you would find in any high-end print/copy studio.
Specs:
The Epson Expression 10000XL is a high-resolution A3+ (12.2" x 17.2") flatbed scanner designed for graphic arts, featuring 2400 X 4800 dpi optical resolution, 48-bit color depth, and 3.8 Dmax for superior shadow detail. It uses MatrixCCD technology and Micro Step Drive to produce detailed, high-quality images, with optional transparency units available for film scanning