Hi keith:
That is a tough call -- but I note that there is NO picture to show the bottom. Maybe that would give a clue -- like any machine marks, or what the bottom looks like.
I think I would be asking for a photo of the very bottom -- at least -- it is worth a try.....in order to figure out.
Also it they are old -- wouldn't you see some *more dust* in places....and also IF that old, I would think there would be wear, or bang marks on the outer edges for all those years....not so much wear around the foot on the side -- you think there would be more *pit marks* on edges.....as the edges would be the ones exposed to more damage over the years.
Just me thinking out loud -- tough call -- but maybe something to ask the seller. Pics of bottom, and pics of bottom corners -- to see if any wear.....as that is where I would think the pieces (if that old) would be most vulnerable??
Hope that helped (
) some