13th-15th century AD. A bronze key with tubular stem, lozengiform bow with trilobate knops to three corners, and large rectangular bit with clefts and grooved wards. Cf. Medieval Catalogue, London Museum Catalogues: No.7, 1940, p.XXIX, nos.18; also see Hammond, B., Medieval Artefact of England & the United Kingdom, p.66-67. 48.4 grams, 91mm (3 1/2"). From an extensive collection of large medieval keys; the property of a Kent, UK gentleman; found Romney Marsh area, Kent, 1990-2015. Similar to London type VI.