Is this an "antique" bottle ?

Hello
I found this bottle and I have not idea what it is.
http://www.abnakicottages.com/bottle.jpg
The metal neck comes out, likely to refil whatever it was supposed to contain.
I just have no idea if this is an old bottle and what kind it is, the photo is
aproximatley to real size of the bottle.
Could anyone please tell me what they think ?
Thank you very much


JC