If it was made before suitcases commonly had wheels, you’re still going to want to replace it. The grandkids (if there are any) won’t want it.
The funny thing is that from what I heard with the antiques markets (which is admittedly possibly a decade or so old) it is antique luggage of all things which is 'in' and antique furniture which is out relatively speaking to the past.
The grandkids not wanting it may still apply if they are still minors, there would be plenty of time for tastes to shift again.
It’s not suitable for air travel, but I treat anything for air travel as disposable. I still use it all the time for car-based travel. It’s larger and nicer than what I fly with.