I’m no expert but I know that many of the Series 2s they manufactured were 175, known as the X175 model. I follow a Brazilian scooter shop called Lambretta Ecke which is based somewhere in the Deep South of Brazil were lots of German speaking Europeans ended up.
My interest is because I have Brazilian family through marriage. Some Brazilian scooters have made it to the USA but I think that may be the first Series 2 I have seen in the UK.
This has some of the history:
https://www.elsiambrettista.com.ar/en/n ... tas-brazil