This is a Stug 3 that that I was able to look at some years ago in Virginia.
This stug still wears the zimmerment that was applied in the factory in 1943. It almost just off the showroom floor.
The story here is that in 1943 this track was put on a railcar and sent to Russia.
It went out on a night patrol as the lead track with two others along the river 100 miles south of Stalingrad. They were ambushed the front left was hit by a grenade. The 2nd and 3rd vehicals backed out this one turned right onto the ice where he broke through and sank.
The crew got out and took the mg with them and left everything else behind.
When it was pulled from the river in 1995 it was loaded with 75 rounds for the gun, the engine contained oil and fuel. There were 78 klicks on the odometer.
The Russian Army sold this to the United Satates Army. Shortly after it left Virginia headed for Ft Knox
There is a video of the recovery, that has bee lost (I,m told) showing the Russian soldiers unloading ammo tossing it in a pile like it was firewood.
Wonder how I can edit the title.
.Count me in for that one. 
