Both PB ranges were based on Phil Barker's books Armies of the Macedonian and Punic Wars and The Armies and Enemies of Imperial Rome. This figure is taken from illustration 110 in the first edition of AEIR.
The code numbers for the AEIR range correspond to the illustrations in the book plus '100', i.e. illustration 1 is figure 101.
The base is numbered PB 210 on the upper surface in the usual manner.
Sassanid Levy are famously timid and included in Sassanid Persian armies mainly to do the fetching and carrying. Also digging. Lots of digging. Considering his lacking of military prowess and reputation this chap has adopted a surprisingly aggressive pose with his spear thrust forward in a threatening manner. He is fooling nobody.
All the models I have are armed with a fairly slender spear, although I suspect variations exist as they do throughout the PB ranges.