FS Locomotive E646 003 in the service state of the mid-seventies, with intermittent signal repetition and simplified livery, Florence Depot, ep. IV Decoder connection MTC21 with sound preparation DCC Sound version art. 69156. Locomotive E646 003 in the state of service of the mid-seventies. Florence Depot. Locomotive E646 003 in the operational condition of the mid-seventies. Bw Firenze.