Micro Metakit 96800H Italian Photo Grey Pacific Express Loco Class 691 of the FSVery Rare Model only 80 were made Worldwide. Prototype: The Ferrovie dello Stato Italiane (FS; Italian State Railways) Class 691, also known as Gruppo 691 in Italian, stands as a pinnacle among locomotives, boasting the 4 6 2 'Pacific' configuration. Renowned as the swiftest and most potent locomotives ever to grace the Italian railways, they emerged from a pivotal era in the late 1920s. The FS recognized the need for a new breed of locomotives