I was going to guess that it's a revolver pistol quick-loader. Why spend time loading each bullet separately? Jam 'em all in at once! Abusive comment hidden. (Show it anyway.)
It's a censer, the kind used in religious ceremonies. Something like incense is burned in it and the officiate walks around, spreading the scented smoke by swinging the conical pot from the end of the chain. Abusive comment hidden. (Show it anyway.)