Clock is WW2 Vintage RAF!

RAF / Air Ministry 8-Day Aircraft Clock – Type 6A/322 (Mk. IV Series)

🔍 Key Markings on the Back

6A/322

•6A = Air Ministry stores prefix for aircraft instruments (RAF).

•322 = The specific stores reference for the Mk. IV 8-day cockpit clock.

This is the exact designation used in RAF inventories for this model.

8A/2197

This is the movement or case manufacturer’s contract or inspector code used by the Air Ministry. Many RAF instruments of the era have this secondary stamping.

6579/41

This is almost certainly:

•Serial number 6579

•Year of issue: 1941

This places the clock firmly in WWII, early-war production.

ADJ

The screw labelled “ADJ” is the rate adjustment screw for fine-tuning seconds per day.

🛫 Where Was This Clock Used?

The 6A/322 Mk.IV 8-day clocks were fitted to a broad range of WWII RAF aircraft, including:

•Spitfire (various marks)

•Hurricane

•Lancaster

•Halifax

•Beaufighter

•Mosquito

•Typhoon

•Anson

•Oxford

and many others.

These clocks were general-issue and widely interchangeable across RAF fighters, bombers, and trainers.

🧭 Summary

Your clock is a:

WWII RAF 8-Day Cockpit Clock (Mk. IV)

•Air Ministry stores ref: 6A/322

•Serial/date: 6579/41 (1941)

•Likely manufactured for RAF by Smiths, Jaeger, or another MoD contractor

This is a genuine British wartime aircraft instrument.