Beautiful Antique Dark Black/Green Blown Bottle

  
It is heavy, one of the heaviest bottles for its size. I think it is handblown I don't see a seam. The bottle looks black but when you hold it to the light you can see it is actually an intense dark green which I think is amazing. The lip is not altogether uniform, there are no marks. I have no idea how old it is, but it is heavy so whatever its age it was made with a lot of glass, nothing like a more modern bottle. I have no idea what it should be priced at. There are bubbles within the glass itself.