Wood Nesting tables

I bought this set of 3 nesting tables at a Thrift store. I think they are made of Walnut wood...but I'm not sure. They look old and they are made well. I don't know much about furniture but I am interested to find out what time period they are from and hopefully where they were made before I chalk paint them!
Can anyone tell me anything about these?.
The tallest table is 26" high and 22" wide.
Thank you in advance for any help!