This 'Dante Fastback' sports seat is MADE IN ITALY to fit any Lambretta S1 S2 S3 GP DL or Serveta, and features waffle patterned sides. This seat is designed for use without an under seat air scoop.
The Complete Spanner's Manual: Lambretta Scooters by Martin 'Sticky' Round Third Edition 8100072
The Complete Spanner's Lambretta Kit Book
Eibar Lambrettas 1954-1989 by Jaime de Prat Salomone
The Unofficial Lambretta Manual Update by Mark Haines