This vehicle was a product of the efforts in the 1930s to get a new battle tank. It's hybrid and seemed to have wheels like a BT and three supporting rollers for the band like the prototype t-46 from 1936. The big tower and a smaller one at front makes it look very like the T-28. Chief of construction was M Koshkin who was in charge in Leningrad and the tank had to versions (4 and 5) both built on a chassis from a BT tank. The T-29 tank never came into production, and the project stopped when Koshkin was called to Kiev 1937 to develop a new tank, the famous T-34.