Advice for rare japanese Whisky needed

Hi there,

I need help finding somebody who can tell me the value of a whisky bottle I got from my grandfather.

I have a special edition of a japanese Suntory whisky. It was made, in a special porcellan bottle for the purpose of the guest playing of the "Berlin Philhamonic Orchestra" in Tokyo, 1986. It is rare, IMHO only 300 Bottles were made. Here are some pictures:

So i'd be thankful for every hint you guys can give me.

TIA Alex