OSS/SOE clockwork time delay.
Mk3 Clockwork time delay. Designed for use when a specific , accurate time delay was required which could not be obtained using an AC Delay or time pencil. This example is a 24hr example and was designed to be watertight and could be used in conjunction with British or American devices with the use of an adaptor including the Limpet. This type of clockwork delay was supplied to both SOE and OSS.
In good working order with all caps and plugs but no detonators or initiators. Scarce