HP 3 Button USB Optical Mouse without scroll wheel. These are becoming increasingly difficult to find and are well suited for use with specialist software such as Catia

New (open box), with paperwork as shown in the pics.

These mice appear to go by various references including DY651A:

Product No: ET424AA

M/N: M-U0013-0

Assy P/N: 361781-009

Spares P/N: 573078-001