Flask?

[botlguy]

It has that Whiskey flask shape but being that thin I'm thinking Flavoring Extract. I have seen similar shaped bottles with extract labels. Memory is fuzzy, hope I'm not misleading anyone. I don't think it has been heat shrunk.

 

[solitarycanary]

capacity is 50ml. Also worth noting that there is (what appears to be) a cup mold seam on the bottom.

 

[cc6pack]

castor oil or cod liver oil looks to ba ABM, a few were embossed, most I've found were like yours slicks