It's worth checking with DS first for the 3666 version.
I got some from ds last year.
I think I used code 30 07 6910
Elaine 
thanks, playmofire & skypurr. u.s. ds has no stock on the cone and said it was entirely discontinued.
they also confirmed that the cone from the recent castle and the old one from 3666 are different for anyone who is curious.