Kubinka Tank Museum
The T-100 'Sotka' was a two-turreted heavy tank prototype. It became rejected in favour of the KV-1 heavy tank. A second prototype was made as a single self-propelled gun T-100Y, later designated SU-100Y, presently displayed in Kubinka Tank Museum. The bureau started work on the T-50 infantry tank in 1939, but was gutted during the Great Purge. The T-50 was handed over to the Factory No. 174.