From my Panzer III, I dropped in a set of steels to up it's speed and don't currently have a project in the works or planned, and being nice gear I don't want them sitting in a box.
In good shape, gears turn true and not any noticeable wear. They have hopped-up motors on them that Phil (rip) many moons ago installed as a package for me, so they get a bit more top end speed.
Asking $40
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Tiger I - Panzer II - Panzer III - Panzer IV - Chi Nu Kai - Panther G - KV-1b 756(r)
M4A3(76) Sherman - T-34/85 - M3 Grant - SECRET PROJECT