Wonderful table!!! Appears to be walnut...likely midwestern. Those tables with that grooved leg were made between 1880 adn maybe 1910...maybe even 1920. The difference in the finish is likely due to the table and 3 leaves being refinished and the other 3 leaves were not. Of course the rack is different wood, it was just for storage....not "furniture". I had it's twin.....but my daughter has it now. Loved that table....It could be a tiny little table in a small apartment, and you could flip a leaf up to eat on....or it could expand to fit a family of 6 or 8. I can't imagine what was patented....that sty;e table was fairly common in the day adn 45 years ago not unusual at farm sales. What kind of leaf support is there? And it appears as if a cleat has been added to the drop leaves to keep them from warping....likely when it was refinished. I saw a table exactly like that, with 5 leaves, oak, all refinished, leaves also redone....sold at a sale 3 weeks ago for $165. In my mind way too little....but it was a tag sale and didn't even sell the first day so the price must have been pretty close.

Maifleur, Thank you. I will try to get a picture of the underside and legs when it arrives at my house. I'm in need of a temporary set as everyday use and the price was too good to pass up since at this point I can't invest any or much cash. Anyway my son pain 25$ for the table and 6 chairs. All are in good repair...needing no repairs. They are all sturdy and not lightweight. I like that the sides can drop making for 3 different sized tables. There's 5 in my family which makes this a good size for us. A table pad came with it but as the table top has already seen much wear along with what looks like a hot pot that left a big mark I don't see the sense in using the pad. Anyway Thank you.

Lovely table.....walnut including wide boards with sap wood....likely dates not later than 1890 and most likely earlier. Where did youg et it? What part of the country do you live in? I am posting from it's cousin, I use it as my computer table/desk....junk collector table. What sort of mechanism does it have to support the leaves?

I forgot to mention that I have purchased this table... https://www.anthropologie.com/shop/sonali-dining-table?category=furniture-kitchen-dining-tables&color=016 It is on backorder so I still have time. I love it but I really would like something that I am able to adjust since the space is small. Here is the example of how the table should hook vs. what I am finding.