Round expandable pedestal dining table, solid wood

I have a round dining table. Very heavy. One solid piece with option for expanding, but I do not have the leaf. Plain in design with rounded feet atop wheels that appear to be wooden. No markings or labels on it that I can find besides a worn piece of something nailed to it that has no visible labeling. It is free of any major damage or visible scratches with the exception of one small flaw visible in the pictures. It expands via a couple of gears and has a metal handle underneath. It has been in the family since grandmother but I'm not sure which period of her life it was purchased in and was given to us by my husband's mother 10 years ago. She had it for a number of years prior to that. Any information of time period it is from or worth would be greatly appreciated!!