Sorry table is in storage and it is too heavy for me to lift into position by myself. Not sure of exact dimensions but it seats 4 people. Now in a bind I have used the modern board and a tablecloth as a leaf to add 2-4 more people. It needs a turnbuckle to bring the top together.
I had a 12-14 open body hook end fitting turnbuckle but haven't found it yet. The base comes together with original gate hooks.
The center support is there when you stretch the table out for the leaf but is otherwise hidden in the base. The small original casters still work. If you don't plan on moving the table much you might want to set those on sliders or coasters to distribute the weight over say a soft vinyl floor. The top is oak veneer and I believe the band around it is tiger oak veneer with a rope trim.
Very important to rest this on a soft thick blanket if on it's side. I completely stripped and refinished this in the 1980s.