The absence of the Traveller badge intrigues me. My first thought was that early models were still called SF, like their predecessors. Here is an interesting movie about that:
https://m.youtube.com/watch?v=Yaa0RUvBCR4

However, there are multipe Travellers with the badge on the TWDB from 1969. This indicates the Traveller carried its name since its introduction.

I am under the impression that the ones without badge always have an US keyboard. Maybe some trademark and/or legal issue prevented Olympia from using the name Traveller in the US?
 

Pete E. wrote:

My 1966 Olympia SF does have the "Deluxe" engraved on the breastplate of its segment.  See photo below.
Wonder why my new 1971 machine does not have such an engraving...???

I suppose it is one of the many cost reduction measures.

Yes...If the paint is gone...that is easy to remedy with a bottle of Testor's enamel brush-on paint.  But the metal engraving is sort of hard to make disappear...
 

Thanks Pete. This manual too supports my idea Travellers without the badge were for the US only. At the back of the manual is the address of the US importer. I bet your machine have the same address on a sticker at the bottom plate.

Another thought...here in the USA there is some history with the Travellers group of people that travel throughout the country and are involved in fraud schemes.  Long history going back decades and decades.  Group mainly of Irish descent.