You aroused my curiosity, so I went to the wood ID site (that I previously suggested). IMO, your board looks like solid Mahogany of some type. Without a thicker sample to identify the end grain, it will be difficult to determine and exact species because of the several types.
Upon my viewing (with lack of end grain comparison), your sample closely resembles Andiroba Mahogany (also known as Crabwood), grown in central and south America. It's been found to be the most econimical Mahogany type for use in both solid and veneer, commonly used for plywood, veneering cuts, solid-wood cabinetry and flooring.
Here’s a pic of the species shown on the website, followed by the direct link for Andiroba. When on the website and to view all types of Mahogany species, use the site’s search box (top of page) and type-in: mahogany. Hope this helps!
View attachment 452050
Andiroba | The Wood Database (Hardwood)
