Up for auction is a guitar signed by music and Beach Boys legend, Brian Wilson. The guitar was purchased through the website “Charitybuzz”, and comes with a COA from the charity it benefited, Sweet Relief Music Fund. This doesn’t provide any true additional authentication, but Brian Wilson’s official Facebook page also promoted the auction on 2/24/23. You can scroll his page to find the promotion, but also included a picture of the post. Happy to add any other additional pictures.