Bottle ID

[fyrffytr1]

I found this small green glass bottle and was hoping someone here could tell me what it was used for. Threre is lettering on the bottom that reads N B 4. A seam runs up both sides all the way to the top.

 

[Bigcypresshunter]

All I can tell you its a 20th century ABM type (made by an Automatic Bottling Machine)

 

[fyrffytr1]

Thanks BCH and SWR. It will make a nice suncatcher.