Fairly clean (was in storage for over 20 years so there is some soiling), although there is some discoloration on some pieces. Several critical pieces Including:

Cannon with Gunner seat 

Elevator 

Catwalk

Support Beams (5)

First Floor Trap Door Platform (door missing)

2nd Floor Bridge

Top Roof Section

R2D2 Action Figure

Plus several other pieces

Please see photos as part of description (you will recieve eeverything in photos)