Two postboxes have plates with refs W1K 40 and W1K 240, this one and one on Mount Street. This one is the one with the wrong plates because an earlier plate had W1 96. Correct refs deduced from earlier plate according to the usual pattern.
operator
Royal Mail
operator:wikidata
Q638098
post_box:apertures
2
post_box:design
type_c
post_box:type
pillar
ref
W1B 96;W1B 296
royal_cypher
EIIR
royal_cypher:wikidata
Q33102113
source
survey
wikimedia_commons
Category:United Kingdom post box W1K 240D and W1K 40D