Definitely Mdina.
![Smiley :)](http://www.glassmessages.com/Smileys/classic/smiley.gif)
And a sort of perfume bottle, or just a small bottle.
Studio glass does not need to have any function or have to be anything.
![Grin ;D](http://www.glassmessages.com/Smileys/classic/grin.gif)
Stoppers for bottles were sold seperately in the shop earlier on, none fit properly, but yours looks almost like a small paperweight, balanced on top to look like a stopper. Smart use of a pwt!
Normally, stoppers would have a sort of post of glass on the bottom of them. But they do get broken. I've got a few that still sit on the bottle, finishing it off nicely and the lack of a post/stick-bit under it makes no difference.
I'd put this in the mid-'70s-ish to the mid-'80s-ish.