Postal Telegraph and Telephone (Switzerland)

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Swiss PTT logos of 1938 (bottom) and 1988 (top)

PTT (German: Post, Telefon und Telegraph, French: Postes, téléphones, télégraphes) was the Swiss Postal Telegraph and Telephone agency, formed in 1928.

In the course of the international trend towards liberalisation of the telecommunications market, it was transformed into two public service companies on January 1, 1998, Swiss Post and Swisscom. While Swiss Post remained a government agency with a partial service monopoly, Swisscom became a competitor on a liberalised telecommunications market and is an Aktiengesellschaft of which the Confederation holds a majority of shares.