The pic is very small. But it looks like a very nicely figured piece of walnut.
I never made very many friction calls. Probably less than 50. But most were walnut slate-over-glass. And the nicer the figure, the harder the wood was to work out nicely, BUT the better it sounded.
You should have you a winner right there !!!!
Wanna see pics with that call laying on feathers, brother !!!!