Nadja? BILEK - postcard in german

[mally]

Nadja? Bilek
postcard to (Onisija or Orisija? - not sure) Bilek
address: could not identify Netjahaliwka

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camp: Lager Auschwitz O/S - Postamt II - (Rückantwort)
postcard is in german

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Andrej Menik - probably same camp (same stamp)