Context (References)
cf: Museum of London (1940) 'Medieval Catalogue' London: London Museum Catalogues
Event Date 1940
Author: David Kay

Context (Analysis)
Cf. London Museum Medieval Catalogue, Plate XXX, no. 33 - a Type IV key from London Wall, London. Type IV keys with 'toothed' bits, such as the above example, are reported to date particularly to the 13th century.
Event Date 22/1/2019
Author: David Kay

Description (Physical description)
Key with slightly double-cusped bow, sub-cylindrical pin shank, and single bit cut with one key ward on the front edge and two to the bottom edge. The entire object is quite corroded.
Event Date 22/1/2019
Author: David Kay