{"geometry":{"type":"Point","coordinates":[-0.299714,51.71535]},"type":"Feature","properties":{"entry-date":"2026-05-19","start-date":"1984-09-27","end-date":"","entity":31631576,"name":"London coal duty marker on east side of Broad Colney Bridge","dataset":"listed-building","typology":"geography","reference":"1174719","prefix":"listed-building","organisation-entity":"16","quality":"some","documentation-url":"https://historicengland.org.uk/listing/the-list/list-entry/1174719","listed-building-grade":"II"}}