small wood slab coffee table  

Probably
Probably one of the many copies of Nakashima to spring up. Go to http://www.nakashimawoodworker.com/ to learn a bit more about George.
Original Nakashima pieces command astronomical prices because of their authenticity, scarcity, and supremely skilled craftsmanship. Copies, not so much - i.e. the metal brackets. But, just because it's a copie doesnt mean that it's not a beautiful piece of wood.

thanks
I appreciate your response. I am aware of Nakashima's work and never thought the table was connected to him; it's too puny but it still has a nice look. I don't know what kind of wood it is but the seller thought it might be monkey pod.

The only
thing this has in common with a Nakashima table is that they're both made with an irregularly-shaped wood slab top. I see no reason to invoke Nakashima's name in connection with this piece. It is certainly not a copy of any Nakashima work that I am aware of.
George Nakashima tables:

.
Slab table crafters just can't help themselves.
Most are never trying to copy Nakashima.
Some tables are kind of
nice. A primitive rustic quality. I suppose they just can't bear
to trim a hunk of wood down. : )
That one is just 'eh'. No redeeming qualities. I doubt whoever banged
that together knew who Nakashima was.
!

Not all
Not all Nakashima tables have the chunky wood bases - a good number of his coffee tables have spindle legs. And given that most people with slab coffee tables hope against hope that they've discovered a long lost Nakashima I made the jump.
It could have been an innocent coincidence as well - an outspring of the rustic 'home crafted' furniture that was rampant in the 60s and 70s.

Yes
I even found some Nakashima splay-legged tables (Knoll seems to call them "spray-legged" !) with squared legs, not turned. . .
Here's a nice little end table from GN -- and we get to see the underside, thanks to photos found online from "spins LPs."
Don't let anyone tell you there are no metal fasteners in a Nakashima piece: three plugged screws are readily apparent here, and more power to him. (The middle one might even be screwed into the underside of that big butterfly ! That's what I would have done, I think.)

yeah its not easy, the timber...
yeah its not easy, the timberyard I visit most regularly have a lot of slabs for sale and though I've allways wanted to buy a few you are pretty much at the mercy of mother nature with them, I'd say only 1 out of 20 are pleasing enough for me to want to make the effort with.

Mr
Nakashima secured his own supplies of timber, buying boles and directing their cutting and drying. I wonder how long it was before he bought his first (wide) planer ? The careful seasoning (and finishing) of wood would have become important skills for him, in order to assure wide planks that would stay reasonably flat. I wonder if he was able to pass on any of his accumulated practical knowledge. . .in writing.

Gayle
Your table looks like Koa wood, commonly originating from Hawaii.

I have had a few of these in the past
and all where monnkypod not koawood.

Monkey Pod Table
The table pictured in your original post, Gayle, looks exactly like one I used to own. Sadly, it was stolen when, in a youthful moment of irresponsibility, I left it in my back yard in Chicago for a time. Whoever grabbed it likely had no idea what a gem they had in their hot hands.
I can't help but wonder if you somehow ended up buying it somewhere -- yours looks so similar to the one my father had passed on to me ... he purchased it while in the military in the Phillipines, I believe.
If ever you wish to sell the table, please let me know. Thank you.