Whilst they are similar at first glance, the door shown in the old photos is not the same door as in the recent photos.
The most obvious difference can be seen by looking at the boltwork on the inside of each door. The door in the old photos has a lot more sets of horizontal bolts than does the more modern door.
Looking at the frame of the older door, it is clear that it had two horizontal pressure bars, whereas the newer door has only one (this is the horizontal bar running across the middle of the outside of the door).
The hinges are also different. They are crane hinges as you suggest.
As you are probably aware, the name on the door, Bob Fields, corresponds to a jeweller in Porterville. If he’s still alive, he would be 79 years old. He was still alive and living in Porterville in 2013. He may be able to shed some light upon the age and history of the door, and whether it predates him or not.
Should Bob be unavailable, there are experts here with knowledge that dwarfs mine, who will have some insight into the likely age of the door.
Unfortunately, even if this door was as old as you suggest, it is very rare for them to be sold at a profit. They often end up offered for sale, usually with hefty asking prices, but the reality is that they either remain in situ, or are removed as scrap at significant expense.
It isn’t unheard of for a deal to be struck whereby a party who wants the door removes it at no cost to the building’s owner. The door & frame are seen as payment for the labour of removing it. I don’t think the door your have is desirable enough to attract such a deal, however.
Should you decide to leave the door in situ but won’t be using it, and depending on the use of the building, it might be advisable to have the mechanism disabled a suitably qualified locksmith/safe technician. This will prevent the possibility of people ending up accidentally locked inside.
It would be great to see pictures of the other door you describe.
