Sculptor Charlotte Fisher and partner Erwin van Asbeck feel "ripped off" after one of their arts installations using old steel buoys appeared to be copied at the Wynyard Quarter waterfront redevelopment.
The Grey Lynn couple were surprised to see the buoys outside the Viaduct Events Centre on the opening night of the Auckland Art Fair last Wednesday.
It was great to see the buoys placed as a nautical reference on the newly developed waterfront, Mr van Asbeck said. But Ms Fisher said the couple should have been involved in the project to make it work better and paid for "our idea".
They held a low-key protest at Saturday's Wynyard Quarter opening day, holding placards calling for artists to be acknowledged for their work.
In 2007, the sculptor and arts manager placed 14 old buoys from the Port of Onehunga along sites on the original foreshore to draw attention to the history of Auckland's development.