Street-Art – Smart City

“Smart city” is a term that covers many different facets and aspects. With four spectacular special stamps, Swiss Post has now lent it some artistic flair.

The idea is irresistible: four internationally acclaimed exponents of street art – three male artists and one female – were given free rein to produce their personal interpretation of what the term “smart city” means to them. Four sheetlets have been created which reflect the concept’s wide-ranging aspects. There is no universally applicable definition of precisely what “smart city” signifies. It is instead a general term referring to a wide range of activities, ideas, innovations and technologies, which all have one thing in common – the holistic, environmentally-friendly and socially-responsible development of urban areas.

The four artists

Basel-born artist BustArt has been painting walls on streets around the world since 1999

David Kümin, alias Chromeo, was born in 1982 and holds two Master’s degrees in art in the public sphere and art teaching

Daniel Zeltner, born in 1984, is a freelance artist and illustrator from Basel

Anita Buser, whose art-world pseudonym is Zaira, is Swiss, worked in Amsterdam from 2011 and now lives in the Canton of Basel-Landschaft

Buying stamps
You can find all the stamps at

Technical information


Philately: from 27.8.2020 to 30.9.2021 or while stocks last
Branches: from 3.9.2020 to 30.9.2021 or while stocks last


Unlimited from 3.9.2020


Offset, 4-colour; Gutenberg AG, Schaan, Liechtenstein


Stamps: 40 × 43 mm
Sheet: 210 × 115 mm
(two rows of four stamps)


White stamp paper with optical brightener, matt gummed, 110 gm²




Chromeo – David Kümin, Winterthur (ZH)
Daniel Zeltner, Basel
Zaira – Anita Buser, Binningen (BL)