vintage hand blown glass decanter or oil bottle cruet, olive green glass made in Spain

Unmarked vintage Spanish glass bottle, a small decanter or a large cruet - this would be lovely for olive oil or cooking wine in the kitchen! Measures about -" tall to the top of the stopper.

It's nice and clean inside and out, I don't believe it's ever been used. There's a 'star' inclusion flaw in the glass which looks smooth inside and out, holding tight.