Photos by Jim Carswell and other (unidentified) sources.
This Leopard 1 prototype has been on display at CFB Shiloh (Manitoba, Canada) for many, many years.
Identifying prototypes can be a little confusing! Before passing redundant machines onto museums, the manufacturer had a bad habit of mixing different prototype turrets on different prototype hulls. In this case, a pre-production Series-0 turret has been mounted on a prototype Series II hull.
Photos by Jim Carswell:
Photos from other [unidentified] sources: