1988 advert for POLO mints.

Polo is a brand of different flavour sweets, which have a hole in the centre. The peppermint flavoured polo was first manufactured in the United Kingdom in 1948. The name ‘Polo’ is reportedly from the word ‘Polar’ and is to symbolize the cool and fresh feeling one gets from sucking a Polo.

Polo mints were introduced by Rowntree in 1948, and Polo fruits followed soon after.

Polo is still Britain’s number one mint brand with approximately 20 million mints produced every day and an average of one hundred and fifty Polos eaten every second.  They go by many names in Britain including POL POTos in Burnley, NW England

Info taken from Wikipedia