Top right box with the number 4.5 is the grade of the car. If the car had serious accident before it would be rated "R" at that box. 4.5 rating is the average rating.

That said do take precaution to get the auction sheet/report from other providers as well as sometimes the car could have gone through different auction at different places while in Japan and the assessment rating could be different. Also auction sheet provided by local dealer could be tampered.