update from puretime :
Dear Sir
We are sorry ,we have tried to get the parts ,sir .But still no result .The part of the watch were imported from other countries ,so it's hard for us to search for it ,the maker has no extra part now ,pls send the watch back ,the maker said that they will dismantle one from other watch and set it in your watch ,so pls send the watch back ,sir .Sorry for let you wait for too long time .
So basically they can take the crown from another watch but can't send it to me.
I feel like i'll never see it again...