Bonhams appraisers return to Rossmoor Step into a world of hidden treasures and cherished memories as all Rossmoor residents are invited to the annual Bonhams appraisal event, where Bonhams’ expert appraisers will unveil the secrets and stories behind your beloved possessions. Bonhams appraisers are returning to Rossmoor on Thursday, Sept. 25, from 10 a.m. to 2 p.m. in the Fireside Room