K = Keys

Postmen carry a large bunch of keys, as each lock on a pillar box, wall box or lamp box is unique. The vast majority of the locks fitted to letter boxes were produced by Chubb. The five-lever locks are slam closed rather than dead bolt. In many cases the key will have small oval or round brass tag attached to it by a ring, onto which the individual box number is stamped as an aid to identification.
The Letter Box Study Group
2016-02-10T16:18:05+00:00
Postmen carry a large bunch of keys, as each lock on a pillar box, wall box or lamp box is unique. The vast majority of the locks fitted to letter boxes were produced by Chubb. The five-lever locks are slam closed rather than dead bolt. In many cases the key will have small oval or round brass tag attached to it by a ring, onto which the individual box number is stamped as an aid to identification.