Yep thats fiberous goat or ram horn, but many well known top international arms dealers would happily sell it as Rhino to those who arnt sure on the id of horn specis.
I never mineded sending them back their miss represented goods, but it always cost me the postage ,customs fees & taxes to look closley at the stuff they should know better than me... Their own collections, show they know the differance.
I think theres a name for what they do?
Spiral