Jan van der Heiden, Factory sprayer 'Jan van der Heiden' with hose and fire, factory plate information sign information form metal bronze copper, die-cast Metal factory plate from factory of fire sprayers Probably bronze. Shield shows large water-spewing snake lightning and fire Above it medallion with the letters of the name of the manufacturer intertwined. Four mounting holes above: monogram fire department fire sprayer features advertising industry fire spray factory patent plate Jan van der Heijden Jan van der Heyden