Let me explain my opinion on the handle.
I agree with Blackstone this is odd. Looks like in a later date this handle was added. I feel it is a handle from a larger object, (tea or coffee pot) which was shortened on the bottom side and mounted with this strange screw. I do not think the original handle was mounted with this screw.
See in the Picture my Areas of concern.
Regards
Jörg
If you like, you could do some CSI on the screw and nut. Measure the screw, decide what tread it is (American, metric or non Standard). If successful you can determine at least if the mounting was done in Europe or America. And if it is an older or newer type of screw. But .... :-)