The T-26 (along with the Polish 7TP) was a Soviet development of the British Vickers 6-Ton (Vickers Mk.E variant) tank, which was designed by the Vickers-Armstrongs company in 1928–29. The simple and easy-to-maintain Vickers 6-Ton was intended for export to less technically advanced countries: the Soviet Union, Poland, Brazil, Argentina, Japan, Thailand, China, and many others. Vickers ...