DIA250xH150mm, China
For these cold nights, here is a Chinese version of the hot water bottle known as the “hot water mistress”. It is made with a good conductor (such as copper nickle, pewter or porcelian) and once hot water is filled in through the small screw up opening, it will be enclosed with a thick cloth bag and put in to warm the bed.
Mountain Folkcraft 
I have one of these hot water bottles and would like to know how much the value for it is?
the price in our shop is HK$1,250 (app US$165).