Those familiar with Debbi Fecher's work know that nearly all her one of a kind shaker sculptures were sold as single shakers (see a few examples below).  However, the example depicted directly to the right is one of her rare one piece salt and pepper shakers.  There are two fill holes for each side of this guy with a "splitting headache".

The set stands 10'' in height and was created by Fecher in 1991.

One piece Insane Asylum set by Debbi Fecher