It appears to be English, maybe 80-100 years old, so not really an 'antique' as such, but with a lot of potential. It's currently more of a kitset than a table though.
The top is a collection of warped and mouldy planks - it appears that all of the animal hide glue joints have failed, possibly as a result of a trip in a very hot shipping container from Africa. Hide glue does not like extreme heat and is the main reason why antiques can be repaired again and again (unlike modern furniture).
Some pieces have come off the turned legs, but fortunately they all seem to have been carefully collected and stored by the previous owner.
The table once had a winding mechanism for extending it but that has disappeared. Apart from that though, it looks like an excellent project for the future, when I eventually regain the use of my left hand.