“Fully Restored” means different things to different people and even different things to the same person as they gain more experience. What might be “fully restored” to someone new to the hobby might be a parts machine to a veteran.
When buying, the machine itself must be taken as the source of what the condition is and words in the ad are almost meaningless. Words in the ad should be taken as the text equivalent of all the conveniently cropped pics taken in the dark we are accustomed to seeing - just marketing noise.
Now in my opinion, the definition of “fully restored” in 2018 are the pins that Chris from HEP would consider “fully restored”. Note that he would not include all his professional work to be “fully restored”. Coming full circle, if he was a collector himself (he’s not) and made a “fully restored” pin for himself, this would be at an even higher level beyond his professional work. The point is there is no standard definition of “fully restored”.