Victorinox 93mm

The Victorinox 93mm knives consist of some early fiber handles models, and the current Alox (Aluminum) handled models. The very popular Alox scaled knives started with the Pioneer  series in 1957.
The Alox knives, as well as being longer, have thicker tools, and a stronger construction (wider rivets), than their 91mm cousins, additionally, the Alox handles are much tougher than Cellidor. So this family is designed for harder use than the Cellidor knives.
Note: The Alox scaled models were sometimes listed in (earlier) catalogs as 91mm, but actually measure 93mm.
In 1961 the Pioneer was used as the basis for a new design of the official Swiss Army Soldier's Knife. These knives were official issue to the Swiss Army (and some others) until 2008.

A comprehensive catalog of a series of Alox special-runs ordered by individuals and sold to collectors and enthusiasts between 2009 and 2013, was compiled by marsax/Victor7000 of Multitool.org.