Is it possible to access manufacturer of Blanc de Chine Porcelain?

by Annette
(Sydney, Australia)

Hi,
I have a lovely Blanc de Chine vintage table lamp of Quan Yin, which stands about 35", overall if I include the beautifully shaped lotus flower shade.
Bought at auction, the porcelain seemingly was in perfect condition. What I had not noticed was she lacked a right hand. It has not been broken off, but rather seems to have 'slipped out' of the sleeve.
I seek to replace the hand if at all possible. Please does anyone know of any factories or outlets of 'body parts'of ancient Chiness goddesses?
Any help would be much appreciated.

(The photo shows her with a right hand - how she should look - from a picture I have managed to find.)
Many thanks.
Annette