Collection of English, porcelain and semi-porcelain, darkroom photography developing trays, used for developing 9x7, 7x5 and 6x3 ¾ sized prints, c.1900. The two largest, semi-porcelain trays, were manufactured by Booths, and have impressed “Booths” marks -the largest has also a printed “Booths Royal Semi Porcelain English Made” mark. The smallest of the three, is a porcelain tray, with a printed, “made in England mark”. Condition: Good with typical wear. Discolored crazing in the middle tray, as shown. The largest tray has light crazing and slight discoloration, and shallow hairline in one corner, as shown. No restoration.