An Espionage Concealment KeyOrigin: English Period: 20thC Provenance: Unknown Date: c. 1940 2000 Height: 5 Width: 1. 75 Depth: 0. 5 The steel or iron key having a secret compartment for concealing messages or hiding poison, possibly of WWII origin, the barrel tip being flanged and lifting out to a hollow interior. The key is in very good condition and operates as it should. We are unsure if this key is of WWII age, but these types of weapons were produced by MI9 a department of