S. Bikkers, Factory sprayer 'Bikkers' with snakes and burning city, factory plate information board information form metal copper, cast Metal factory plate from factory of fire sprayers Probably copper. Shield shows two large water-spewing snakes lightning above walled and burning city Above medallion with the letters of the name of the manufacturer intertwined. Four mounting holes above: monogram (not recognizable) fire department fire sprayer features advertising industry fire spray factory patent plate Bikkers metal foundry