This is the old ESCI Sd. Kfz. 250/10 Halftrack kit first released in 1975. It came out in three versions, the 250/3 command vehicle, the 250/9 reconnaissance vehicle with the 20 mm turret, or the 250/10 infantry support vehicle with the 37 mm gun as modeled here. The molding shows its age a bit but can still be built up into a nice model. As a bonus it comes with some figures which are well molded and quite usable. Still a decent kit which can still be found at model shows.