This is very simple model of Tracklayer Best 75 called also CLB 75 tank. The CLB 75 Tank was a U.S.-produced, prototype armoured fighting vehicle built by C. L. Best's Traction Company of San Leandro, California. Best was a rival of the Holt Manufacturing Company in producing caterpillar tracked vehicles. Among Best's products was the CLB 75 hp (56 kW) 'Tracklayer' The tank was developed by putting an armoured hull over a CLB 75 sometime between late 1916 and early 1917. The tank was widely photographed on July 4, 1917 parade in San Francisco.[1] Only a few models were used one of which had a semi-cylindrical hull with a turret and another was similar but the hull had flat surfaces. The tanks trained with the California National Guard.
3 different textures and materials for Frames, Main body and suspension ( wheels and tracks ) Best is to create new folder and unpack all into this folder. In folder textures should be 3 folders with textures for each part. Blend file should read it if not you must relink the textures ) Format Blend, OBJ and FBX . RATHER NOT FOR PRINTNG ( but i never tried ) !