There are at least four different versions of the Victorinox Champion Swiss Army knife-- Victorinox gradually added tools to it, and kept the same name. The Champion with Hook knife is the second to last in the series.

This model was only produced in small quantities before being replaced completely by the Champion Plus and the SwissChamp. It is a rare knife that is definitely a collector's item. If you just want a practical pocket knife with similar tools, the Champion Original is much more common, and much less expensive.

Champion Original-- no chisel or hook (retired model)
Champion Plus-- adds pen, straight pin and mini screwdriver (retired model)
Champion with Chisel-- no hook (retired model)
Outdoorsman-- no metal saw (retired model)
Ranger-- no fish scaler, phillips screwdriver or magnifying glass
SwissChamp-- adds pliers, pen, straight pin and mini screwdriver

Monarch-- adds nail file, no small blade, corkscrew, chisel or fine screwdriver
Tool Chest Plus-- adds nail file, wrench and compass, no small blade, chisel or fine screwdriver