Hallo,
it is a "Lancia Beta Z51" with Borsani coachwork. The Beta Z50 and Z51 had the same engine, 1963ccm, 41PS. The bodywork of the Z51 was 2000mm wide (the width of the Z50 measured only 1780mm). Their wheelbase was identical with 2550mm. Only 85 Z51 were built between 1954 and 1956 (Z50: 1273 p.).