It's an old prune juice bottle. Back in the day they thought of everything! They designed the bottle so it would be useful after the contents were gone. It has liquid measurements running down the sides along with the words "water" and "juice". So it would be great for mixing liquids like frozen orange juice.
It's in excellent condition. Except for a rusty lid (inside of lid isn't as rusty), it's like new! Holds 40 oz., 9 1/2" tall.
(the glass looks kinda hazy in the first pic, it's glare from my windows)