That bike looks very similar to a Legnano that a HS friend of mine purchased around 1974. His was the classic Legnano yellow-green metallic and came stock with a tubular wheelset (Gnutti hubs, IIRC) which he had converted to clinchers. Orginal equipment also included Campy Valentino deraileurs, so be glad for the Suntour transplant. The frame wasn't anything fancy, nice but not up to those with Reynolds/Columbus.