ORIGINAL: Laurence Gibbs
For completeness. Matter sold more than one type of bolt in cage for the 64 RS , one type bolts to the floorpan the other bolts to the top of the sill section. The cage in the car in question is as pointed out not a Matter one. All 64RS had the battery cut off switch at the battery end. Many have fitted the cut out at the dash and wing top which was an option on M003 package. Some i guess have it fitted for looks , others because of race history.
Value is difficult these days. Would'nt like to comment myself. However worth noting that if it does'bt still have the original seats, wheels and steering wheel tucked away somewhere and you were concerned about having those items for the car then your going to need 3k/4k ish to replace them. That sort of puts the car mid 30's and does'nt assume anything else is'nt missing or worn out or poorly repaired !