Refer to the input text as context and select the correct relationship between 'Bonhams' and 'auction' from the available options.
Options: product/material produced, parent organization, industry, developer

The 4 dollar (USD) Coiled Hair Stella, which was struck in the U.S. but never released for circulation, brought an astonishing 2,574,000 dollars (USD) at auction by Bonhams in Los Angeles on... on.aol.com
industry