I hope that this is not a copy
Paid very much for it...
I saw vases of him in the same shape, but other pattern.
So it's not unusual for Toso. But I can't find anything similar with this pattern like this vase you have in the book, too... The quality is excellent and the the colours look like old murrines.
I don't know much about Toso pieces. In Dr. Fishers Auctioncatalogue there was the same vase like yours in Pina's book.
They wrote, that Toso mostly made his works on request. So the most things made buy him has never been published in books or sth else...