This stamp issue was released by stamp agenture.
The three stamps show US President Donald Trump together with Alain Berset (President of Switzerland), Theresa May (Prime Minister of the United Kingdom) and Benjamin Netanjahu (Prime Minister of Israel).
The illustration does not shows Davos, it is the small village Schmitten GR in the Albula Valley, about 18 kilometres in the south-west of Davos. The two summits behind the church are Leidbachhorn 2'909 m (left) and Älplihorn (3'006 m).
The village Schmitten is located above the famous Landwasser viaduct, a signature structure of the World Heritage-listed Albula Railway (Rhaetian Railway