Mack S46SX Schwing Concrete Pump. No "Mack" Name on Truck or Bulldog - Mack Never Gave License. The item "Mack S46SX Schwing Concrete Pump Truck 1/50 Brand New" is in sale since Sunday, December 16, 2018. This item is in the category "Toys & Hobbies\Diecast & Toy Vehicles\Construction Equipment\Vintage Manufacture". The seller is "cat5130" and is located in Torrington, Connecticut.This item can be shipped worldwide.