These 2 pieces are the back sidepods of the Lotus 97T driven by Ayrton Senna during the 1985 season. They are both complete and show very heavy signs of use.
The marking attribute the parts to car# 2 out of 4 produced for the 1985 season. A.S. (Ayrton Senna), 12 (Ayrton Senna car #12), 97T (Lotus 97T).