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Glass not visually corroded from either side. Dark deposits (soot, industrial dust) outside. Dirt (domestic dust) from inside. Traces of its cleaning with wet rag. Sealing putty partly missing, crumbling. Leading too thin for such a panel. Locally broken. Very weak.
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panel A1 internal side, transmitted light (160 x 180 cm)
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panel A1 internal side,
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