This is a vintage Snow Bunting Green, design by famous professor Oiva Toikka. The Snow Buntings were introduced in year 1988. It was hand made in legendary Nuutajärvi in Finland.
The Snow Buntings are made of massive glass, not blown.
There is a short description for this model on page 30 in the book " Birds by Toikka ".
Size: 90mm x 70mm
Signature: O.Toikka Nuutajärvi