This is a replica of the original screen model used in The Terminator (1984)
It differs from the 1991 MK2 models by having a wider lower chassis, single barrel cannons, a bigger more rounded head with a larger facial cavity and a high torso mounting pedestal.
Only two props were made for the original film, one was destroyed during filming and the other was sold for an estimated 20000-30000 at a private auction in 2009.
This model will be appearing in the upcoming fan game Terminator: Los Angeles Resistance