I just discovered this 6 year old topic. The Swiss also used these little tanks (called Panzerwagen 34/35), 6 in total, numbers M+7304 to M+7309. Looking at the period pics I got, they were 1 x model 1933 and 5 x modell 1934.
See my blog for some more info in German. And
here some technical information. These tanks were put of of service in 1948 and I think two survived.
Before we got the Vickers tanks, we aquired in 1931 two Carden-Loyd Mark VI (numbers M+0206 and M+0207).
Greetings
Chris