I collect such things made of silver that are connected with the Gramophone Co. I saw this humidor at Sotheby's in 2008, so not exactly at a provincial auction house where expensive objects can slip through undetected by the international trade. The final price of 10,625 USD, which was just above the estimated price, was much too high for me:
https://www.sothebys.com/en/auctions/ec ... t.140.html
We're not talking about modern art, antique race cars or anything like that, where crazy price jumps can happen. The fact that the same cigar box should cost twice as much 14 years later shows how "realistic" the current pricing is.
PS: The key is still missing.