Have lovely signed pro celebrity golf picture with COA etc can anyone tell me of an Auction house or place to?

take it to materialise the et. All the players signed the mount as they registered. I was there for the day as my Company sponsored the event, I then bid on this item at the charity auction after dinner - it was all in a good cause after all. Well known household names signed. I don't want to use eBay in case it goes for a few quid. Does anyone have any golf auction knowledge out there? Many thanks