I’ve been living in Poland so long and never thought about these, but now I’m interested what are they for.

5 comments
  1. Its sign that shows where is Walter (water) Valve on Walter (water) supply line. Nubmers is distance from sign to marked Item.
    Ofcourse this one is tossed away from its place.

  2. Broken plate with info where is the water valve, just in case of fire or broken pipe.

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