This Victorian wall box is designated Size B (H 33" x W 13 ¾") by LBSG (the Letter Box Study Group) and given the code WB2085/3. Produced between 1881 and 1901 by W. T. Allen & Co, London. The box pictured was seen at Crich Tramway Village, the home of the National Tramway Museum, in the Peak District, Derbyshire.