Holophane glass lampshades were made with a prismatic design with deep parallel vertical ridges or crosscut prisms. Old and original vintage antique holophane shades were made from high quality pressed glass with a high lead content. The ongoing popularity of the Holophane concept has lead to the prismatic design being honestly reproduced over many decades.
The gallery fitting rim is where the original Holophane placed the makers stamp.
Product Code: 11046/F422