This is a distinctive joint that Nakashima used to connect the legs to the top of his tables. It is usually made of rosewood or walnut, and it is often inlaid with a contrasting piece of wood.
2. Check the construction of the table.
Nakashima's tables are typically made of solid wood, and they are often quite heavy. The legs are usually tapered, and they are often connected to the top with dovetail joints.
3. Examine the finish of the table.
Nakashima's tables are typically finished with a natural oil, such as Tung oil. This gives them a warm, matte finish that is resistant to water and scratches.
4. Look for Nakashima's signature on the table.
This is usually located on the underside of the table, near the edge. It is usually written in pencil or ink, and it may include the date the table was made.
5. Consider the provenance of the table.
If you are buying a Nakashima table from a dealer, ask for documentation of its provenance. This can help you to ensure that the table is authentic.
6. Compare the table to known examples of Nakashima's work.
There are many resources available online that can help you do this. By comparing the table to known examples of Nakashima's work, you can get a sense of whether or not it is authentic.
If you are still not sure whether or not a table is a genuine Nakashima, it is always a good idea to consult with an expert. An expert can help you to authenticate the table and to determine its value.