Do you know where to find coleman gas in Locarno, Switzerland?

Question

Gas catridges 100, 250 and 500ml sizes with a threaded screw top for use with camping stove burner and camping light...

Answer 1

Difficult question!

I only know of blue gas cartridges of two brands (?) in Switzerland, either available at some Esso or Shell petrol stations or in huge hobby markets (Do-it-yourself markets) like Jumbo or the DIY divisions of Coop and Migros.

Some camping places would have as well...

Addresses:
Jumbo-Markt SA, 6592 S. Antonino TI (industrial area)
Migros Centro Hobby, piazza Grande 13, 6600 Locarno TI