This has me stumped, it is small bottle 11.5cm tall, nicely finished, small shallow polished pontil mark, some flecks of ash within the glass. A base of red glass is covered in silver foil with coloured chips on top.
The only item I have found that even comes close is Salviati circa 1880 - described as Corinthian Spangled vase, page 98 Venetian Glass, Confections in Glass. The trouble is that is made with a base of black glass rather than red. Stevens and Williams Silveria used silver foil and colour but this is not Silveria.
All thoughts most welcome!
John