I HAD a 1963 Vespa 150 in 1963. I bought it new for $436. The mixture you speak of is gasoline and oil mixture. I used a funnel & a 6 oz coke bottle kept in the bubble to premix like they tell you to. No oil to ever check since it is put in the gas.
The person who invented the Italian Vespa was a guy everyone knows he was in Italy when he came up with the idea of a bicycle with a engine and the guy got the name vespa because he named his son Vespa. The name of the inventor i thinks is Benjamin Franklin.
I do I got 150 Band$$
I've Got a Secret - 1952 1963-01-14 was released on: USA: 14 January 1963
I've Got a Secret - 1952 1963-01-21 was released on: USA: 21 January 1963
I've Got a Secret - 1952 1963-01-28 was released on: USA: 28 January 1963
I've Got a Secret - 1952 1963-02-04 was released on: USA: 4 February 1963
I've Got a Secret - 1952 1963-02-11 was released on: USA: 11 February 1963
I've Got a Secret - 1952 1963-02-18 was released on: USA: 18 February 1963
I've Got a Secret - 1952 1963-02-25 was released on: USA: 25 February 1963
I've Got a Secret - 1952 1963-03-04 was released on: USA: 4 March 1963
I've Got a Secret - 1952 1963-03-11 was released on: USA: 11 March 1963
I've Got a Secret - 1952 1963-03-18 was released on: USA: 18 March 1963