I have train set 182 [1] from 1975, bought at Harrod’s in the UK and brought back to the US for a family friend who passed it on to me. It’s still in the box with styrofoam liner.
Oh, it was definitely used, but appears to be all there. It's notable in that the set comes pre-assembled and in the styrofoam packing, which is how I received it. I can only imagine what new would look like.