Thread: Cordovan vs. Shell vs. Horsehide?

I know shell is horsehide, I'm wondering if ALL horsehide is shell, or if shell is a specific horsehide.

Also, if cordovan is a tanning process- are vintage shell strops Cordovan?

http://en.wikipedia.org/wiki/Shell_cordovan
Wiki in this case is not so useful- it seems that Shell=Cordovan? but the article clears up that shell is a special kind of horsehide.

http://horween.com/index.php/leathers/
The info here confirms that not all horsehide is shell (only the butt- they have a diagram) and that cordovan is a very specific tanning process. (Horween is one of two cordovan tanneries in the world).

So does anyone know if old Shell strops are cordovan or not?