When my brother in law died, we wound up with 3 electric train engines that my in laws bought him back in 1956. They look great and they run.
I've talked to 2 of the biggest train collectors in our area of the state. They tell me the trains we have are wonderful and worth some money. However, the "market" for them is dwindling rapidly as the baby boomers numbers are shrinking. There really isn't much of a market for them, maybe 25% of their actual value if a buyer could even be found.
People under 40 are more attracted to video games and don't want to fool with things like train tracks and all the other items that previous generations did.
One person's nostalgia is another person's pain in the tookus.