In 1961, the visually updated successor to the Vespa 150 was launched. The frame prefix now starts with VBB1T. Technically, the main innovation is the 4-speed gearbox. Cosmetic changes are subtle: the light metallic blue (MaxMeyer 1.268.0890) is a shade darker, and during the production period (from frame number 71001), aluminum trim was added to the side panels.
Frame numbers by year:
1960: VBB1T 1001–16070
1961: VBB1T 16071–96683
1962: VBB1T 96684–146000