The third of Velocette's overhead-valve, high-camshaft, single-cylinder designs, the 500cc MSS was announced in 1935, its engine being housed in a new frame derived from that of the racing KTT. The model disappeared from Veloce Limited's range in 1948 while the company concentrated on the LE, reappearing in 1954 with a new swinging-arm frame and Hall Green's own telescopic front fork. Its engine too was updated, gaining 'square' bore and stroke dimensions of 86x86mm together with an alloy cylinder barrel and 'head. Finished in the rarely seen green colour scheme (the vast majority of MSSs were black), this incomplete example has not been used for a number of years. There are no documents with this Lot, which is offered for restoration and sold strictly as viewed.