Pottery pipe pot, gray shard, from waste pit Rotterdam pipe making, pipe pot holder earth discovery ceramic earthenware, hand-formed baked Pottery pipe pot gray shard from the waste pit of Rotterdam pipe factory Large pot cone-shaped on three stand fins The clay pipes were placed in pipe pot and then fired. The pot is internally lined with layer of pipe earth to keep the pipes white during baking. Pot is part of the contents of waste collector of pipe maker 'HI' Hendrick Jansz archeology Rotterdam Hillegersberg-Schiebroek Hillegersberg Noord Hillegersberg Zuid Judge Rottekade craft workshop pipe maker Hendrick Jansz archaeological find in the soil: Judge Rottekade at number 71.