Triumph's first 350cc vertical twin had been built for military purposes in wartime, and would form the basis for a civilian version when hostilities ceased. The basic engine design followed that laid down pre-war by Edward Turner for the trend-setting Speed Twin, but featured rocker boxes incorporated into the cylinder head casting, and a built-up crankshaft with one-piece connecting rods like the military 3TW. The running gear was essentially Speed Twin and featured Triumph's new telescopic front fork. Lower geared than its 500cc sibling, the 3T was nevertheless capable of reaching 75mph and could return around 80mpg. This example was purchased in 2012 and since then has been used sparingly, being kept in dry storage the rest of the time. Described as in generally good condition, with 'fair' electrics, the machine is offered with MoT to October 2016 and a V5C document.