They are mirror images that face opposite ways. This is because the Irish government adopted the harp as its official symbol in 1922, prompting Guinness to change its version to avoid clashing.

Guinness shares insight into the logo's background: "Ireland was well-known overseas at the time for its rich culture and musical heritage. The harp was a significant emblem of this tradition and ...

They point in different ways, which helps people to tell them apart. The Irish government adopted the harp as its official symbol in 1922, prompting Guinness to change its version to avoid clashing.

The building where Chicago’s new Guinness brewery stands is a repurposed rail depot built in 1910. One of the main design elements is a 7,700-pound metal harp that hangs over the main bar.