Just bought a parts halftrack and on looking it over it seems it might be a T30. It has a White style serial number on an M3 roller model frame. I thought it might be a really early M13 at first but then noticed no holes in the frame to mount the box the quad mount sits on. I think it will run but not sure yet. Anybody interested in the world's hardest halftrack restoration project? In reality it would probably not be as hard to restore as an M15 with the autocannon.