Hiya, I know you said you'd contacted Sotheby's who were keen but didn't want to include it because of their price threshold - but a smaller local auction house might be the answer to selling it. As Frank said, it would be a nightmare to send through the post (and expensive) and for this reason eBay might not be a practical option but I've bought and sold a few items through smaller local auction houses (Chiswick Auctions being one as an example) and they don't have price thresholds like Sotheby's.