Buzz Aldrin's charity, the ShareSpace Foundation, is holding a gala and silent auction which includes quite a number of items of space-related memorabilia. No Moonwatches unfortunately - the only timepiece is an Americas Cup Limited Edition Speedmaster X-33 Regatta - but a bunch of other interesting stuff including astronaut-signed prints, etc. Most are quite reasonably priced at the moment, though the auction has another two weeks to run. https://www.501auctions.com/apollogala