A real mouth full. Of course the Swiss had their own grey mouse. Looks familiar? It is very similar to the Dutch T65, the German FeTAp 61 and of course the Assisten. The latter is no coincidence. The Modell 70 was developed by a subsidiary of ITT for the Swiss PTT. The SEL/BTMC Assistent was used as a basis for it, just like the FeTAp 61 and the Spanish Heraldo.
The Swiss were not exactly early adopters when they introduced their own plastic grey standard telephone in 1970. Most other European countries had their own since the 1960s. The Modell 70 had the same body shell and handset as the Assistant, but the insides were different, as was the bottom plate. Typical for the Modell 70 is the small protrusion on the handset.
And the Swiss wouldn’t be the Swiss if this telephone wasn’t more sterling than its other Assistant cousins: its parts are a little more solid, precisely engineered and durable.