This insignia with the eagle was designed by the founder of the Girl Scouts, Juliette Lowe and used from 1912 until 1976.
This one is in great shape, complete with lid! It is 2 5/8" in diameter across the top, 2 ¼" tall when expanded, and 1" collapsed. Yes, it holds water, just like the one I had in the 50's. It seemed very magical at the time!
Carry a water bottle? Why not a telescoping cup?