original boxes

Gentlemen, I have been asked to make an offer on a train set where most of the items; rolling stock, track, trestle set, switches, plasticville structures, etc have their original boxes. I generally have a pretty good idea of what things are worth w/o boxes, but would like to have some idea of...

My original 1953 Lionel O Gauge train set is being reactivated. All of the original car boxes are with the set but are in poor condition even though the cars themselves are in excellent working order and shape. Is there any source for replacement "1953 style" car boxes and replacement "1953...