The Swiss postal service, formerly known as PTT, today operates internationally under the name "Swiss Post". In Switzerland, the company uses three different names: "Die Post" (in German), "La Poste" (in French) and "La Posta" (in Italian and Romantsch).
This legendary PTT-Logo using the Swiss cross was designed by Martin Altenburger and famous Swiss typographer Adrian Frutiger.
This logo (using the typeface Frutiger) was introduced when the old PTT was split into two separate companies: Swiss Post and Swisscom. The design still featured the PTT brand, but that was only to be an intermediary solution.
In 1998 the PTT name was removed from the logo and the cross got slanted.
In 2009 the logo was slightly altered, now using a customised version of the Frutiger typeface.