Vintage NEBRO Xylonite development dishes half plate size, vintage photography

...darkroom equipment A set of 3 xylonite developing dishes by Nebro, their size is half plate (6-1/2 x 4-3/4"). In the original board box and a small (bakelite?) funnel. With some staining from silver nitrate, the dishes are not cracked or chipped. The name NEBRO is stamped in the centre inside of each dish. "Xylonite was the first artificially made commercial plastic and was developed in England by Messrs. Daniel Spill, H. Leigh Bennett and A.D.Mackay, who together formed the British Xylonite Company in June 1877." "Neville Brown & Company Ltd, or Nebro were a British company based in London who made photo accessories such as extinction light meters, exposure calculators, developing tanks and lens hoods. They also sold cameras and accessories from other makes such as Braun and Aldis. The company was active from the late 1930s until at least 1963.