Artefact Description: Cuboid structure, all faces except side yellow/brown glazed, sides dull grey, top & bottom have large central hole, front & back are mounted with two large deep grooves inside glazed orange/red missing plug
Initial identification: acid piping valve
Material: earthenware
Inscriptions, makers marks etc: Back = T 2946 20 RM3 B1; front = Doulton & Co Ltd, Lambeth, G
Context or Associated Features: waste tip adjacent to acid factory
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