We just returned from Southern Lumber in San Jose, where three experts couldn't decide between Teak, Walnut and Mahogany ("low probability"). There's a 40-year old varnish over the wood that makes id difficult. (The miller said he could tell by the smell if he cut the piece in half. "No, thanks.")
The following are links to three photos, two of the top and one of the bottom.
If anyone knows for sure what the kind is, please share the id and the decisive clues.
Many thanks, Gordon
P.S. The photos will remain until October.