Of the two coaches that suffered the worst damage, one was built on an underframe dating from 1934, having been refitted with a new body in 1953 and involved in a previous collision with a locomotive in 1958; the other was built on an underframe from 1928.
Of the two coaches that sustained the most damage, one was constructed on a chassis dating back to 1934, having been refurbished with a new body in 1953 and involved in a prior collision with a locomotive in 1958; the other was built on a chassis from 1928.