Portlight; Round patent glass in a wooden porthole. The glass has turned the convex matte side to the outside and is left there in the wood so that it does not protrude; the edge of the glass is sandwiched between the two layers of wood. A layer of cardboard is placed between the layers of wood. Outside; scratches indicate a horseshoe-shaped batter.; anonymous; Netherlands; c. 1832; wood (plant material); glass; cardboard; iron (metal); putty (sealing compound); h 28.3 cm x w 30.6 cm x d 7.8 cm