Welcome to the forum GraySky ...
Generally speaking , in older german culture .....
Oak symbols tended to represent strength of body , mind & character .
Rabbits & ducks tended to stand for fertility/sex .
I noticed , near the bottom of the vase , 2 acorns missing (they've dropped off) ... symbolizing two new lives starting .
Perhaps this IS a wedding vase .
What have you come up with , GraySky ?