Satirical LEADED WINDOW PICTURE, showing old vintner who tells his sons that also grapes can be used for wine making, referring to the widespread adultering of wine. Cologne, Germany, 19th ctry. 20 cm x 27 cm glass intact, painting in perfect condition 550 EUR Text in Cologne dialect: "DAS GEHEIMNIS DES ALTEN WEINHÄNDLERS: MER KANN OCH US DRUVE WING MAACHE!" [The old vintner's secret: "One can also make wine from grapes!"]