Late 19th century Venetian Murano art glass zanfirico bowl

Yesterday I made the trek down to Sydney to attend an antiques fair, & was extremely glad that I did, because I had one of my best - ever hauls of loot. To begin, this Venetian art glass bowl caught my attention immediately.
I've owned (& sold) quite a bit of Murano glass of various types over the years, but I've never encountered a piece from the 19th century. The difference between this item, & the mid - 20th century zanfirico type glass is significant.
This bowl is incredibly fine, & the zanfirico decor, in a subtle pale green & white, is complex. On each side of the dish, there is a clear applied roundel with a putto (cherub) head. It measures around 5.5 cm tall, around 10.5 cm wide across the top rim, & 7 cm across the integral, footed base.
Similar items are pictured in the book "Exquisite Glass Ornaments - The nineteenth century Murano glass revival in the De Boos Smith collection", & are attributed to the Compagnia di Venezia e Murano, from the last 20 years of the 19th century.