Vintage Mezuzah Case green bubble glass and metal mezzuzah messuza

Description

some kind of metal - i would guess silverplate but that is just a guess - some kind of white (silver tone) metal.
I'm pretty sure it is not sterling silver.
i do not see any markings of any kind indicating what the metal is or who made this item.
the green bubbles are blown glass.
estate find - age unknown
Thanks for looking!
😀