Sub caliber spotter for artillery designed in the 1950’s for the Swiss PAK 50 and PAK 57 anti-tank gun. Although no longer produced, they are still in service with the Swiss Army infantry. Both the PAK 50 and the PAK 57 anti-tank guns are very useful in built-up areas, as they can hit the more vulnerable parts of a tank from a close range. The PAK 50 and PAK 57 anti-tank guns are both of 3.54 inch (90mm) caliber. At 1,391 pounds (631kg), the PAK 50 anti-tank gun is the lighter of these two anti-tank weapons. It fires a 4.3 pound (1.95kg) HEAT warhead up to a range of 656 yards (600m). The PAK 57 weighs 1,578lbs (716kg). The maximum range of its 5.96 pound (2.7kg) HEAT warhead is 874 yards (800m). Both guns have shields fitted to protect the crew. The PAK 50 anti-tank gun is fitted with a muzzle brake, but the PAK 57 is not. (www.tanks.net)

The specimen above is a joint venture between Dynamit Nobel in Germany and Thun

PAK-50  PAK-57