Antique WWI German Military Parole Heimat Glass Flask with Metal Case

Description

WWI German military Parole Heimat flask.
Round glass flask inside a decorated metal case.
Measures approximately  6 1/4"  tall x 5" wide x 2" deep
Front metal plaque (which is loose from case) reads:
Parole Heimat
Res. hat Ruh
Andenken an meine Dienstzeit
There is a number on the red shield and silver
anchors
Gold tone oak leaves on each side of the metal case
There appears to be a flag missing on the right lower side
Metal shaped heart (for picture underneath) reads
"Das HERZ lacht dem Reservemann wenn er nach Hause fahren kann"
There are 2 "happy face" hearts on either side of the word "dem"
Surrounding the heart show scenes of the soldier arriving home, leaving the sweetheart, and toasting to the reserve. Large heart shaped locket for picture in the middle, with German inscription. Decorated with gold tone
oak branches on either side.
The tip of the metal heart is missing
The metal case does not close securely at the top - pins to close it are missing
The case has corrosion on it.
FROM A SMOKE AND PET FREE HOME