Double Magazine pouch

[stallturn]

I have a double Luger magazine pouch which appears to date from 1915. Are these rare? On the inside flap it is marked â??F L. B. 1â?? and â??1915â??. With it there are 2 magazines, wood-bottomed and black in colour. They are unmarked, but slightly rust stained.
I have several questions:

1. Are magazines contemporary for the pouch, or later?
2. I am thinking of selling. What might the ensemble be worth?
3. Would it be worth my while selling the magazines separately?

I attach several photos.