Feldpost number on LW-Y-strap

[ayf]

I bought a Y-strap ,the Y-strap was found in Norway after the war and are stamped LBA 39.
The Y-strap have a tag with this info :

Muller.F
L 24445

Someone know witch unit this one belonged to ?

Regards
Norway.

[hucks216]

24445

(Mobilmachung-1.1.1940) 7.Batterie Flak-Regiment 13, dann 7.Batterie Flak-Regiment 33,
(10.2.1943-23.8.1943) 2.Batterie gemischte Flak-Abteilung 526 (v).

[ayf]

Thank yoy