NNP

Trussell.  The upper die in coining; the punch. The trussell is mated with the pile, or die in the lower position in striking. The trussell is driven into the pile. (This definition presumes dies acting in vertical motion; on some modern presses the dies operate horizontally).  See presses and pressroom practice.

Reference:                                                                                                                                          

NE42 {1992} Doty, p 334.

excerpted with permission from

An Encyclopedia of Coin and Medal Technology

For Artists, Makers, Collectors and Curators

COMPILED AND WRITTEN BY D. WAYNE JOHNSON

Roger W. Burdette, Editor