Pleae help with Feldpostnummer

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Hello fellows,

can anybod tell me something about these Feldpostnummern:

L 50400 or L 59400

Thanks in advance!

Joerg

[prorege1]

50400
(1.5.1942-19.10.1942) Feldpostamt 954, und gestrichen,

(1.5.1942-19.10.1942) Stab Jagd-Division 5,

(8.9.1943-22.4.1944) 27.10.1943 Stab Jagd-Division 7.


59400
(12.3.1943-7.9.1943) Regimentsstab u. Stabskompanie Panzergrenadier-Regiment 104.

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Thank you vrey much for this fast help!!