{"id":228,"date":"2025-11-28T15:30:32","date_gmt":"2025-11-28T15:30:32","guid":{"rendered":"http:\/\/concreteswan.net\/?p=228"},"modified":"2026-02-03T11:51:03","modified_gmt":"2026-02-03T11:51:03","slug":"clock-is-ww2-vintage-raf","status":"publish","type":"post","link":"https:\/\/concreteswan.net\/?p=228","title":{"rendered":"Clock is WW2 Vintage RAF!"},"content":{"rendered":"

\"\" \"\"<\/p>\n

RAF \/ Air Ministry 8-Day Aircraft Clock \u2013 Type 6A\/322 (Mk. IV Series)<\/b><\/b><\/p>\n

\ud83d\udd0d Key Markings on the Back<\/b><\/b><\/p>\n

6A\/322<\/b><\/b><\/p>\n

\u20226A<\/b> = Air Ministry stores prefix for aircraft instruments<\/b> (RAF).<\/p>\n

\u2022322<\/b> = The specific stores reference for the Mk. IV 8-day cockpit clock<\/b>.<\/p>\n

This is the exact<\/i> designation used in RAF inventories for this model.<\/p>\n

8A\/2197<\/b><\/b><\/p>\n

This is the movement or case manufacturer\u2019s contract or inspector code<\/b> used by the Air Ministry. Many RAF instruments of the era have this secondary stamping.<\/p>\n

6579\/41<\/b><\/b><\/p>\n

This is almost certainly:<\/p>\n

\u2022Serial number 6579<\/b><\/b><\/p>\n

\u2022Year of issue: 1941<\/b><\/b><\/p>\n

This places the clock firmly in WWII<\/b>, early-war production.<\/p>\n

ADJ<\/b><\/b><\/p>\n

The screw labelled \u201cADJ\u201d is the rate adjustment<\/b> screw for fine-tuning seconds per day.<\/p>\n

\ud83d\udeeb Where Was This Clock Used?<\/b><\/b><\/p>\n

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

\u2022Spitfire (various marks)<\/b><\/b><\/p>\n

\u2022Hurricane<\/b><\/b><\/p>\n

\u2022Lancaster<\/b><\/b><\/p>\n

\u2022Halifax<\/b><\/b><\/p>\n

\u2022Beaufighter<\/b><\/b><\/p>\n

\u2022Mosquito<\/b><\/b><\/p>\n

\u2022Typhoon<\/b><\/b><\/p>\n

\u2022Anson<\/b><\/b><\/p>\n

\u2022Oxford<\/b><\/b><\/p>\n

and many others.<\/p>\n

These clocks were general-issue<\/i> and widely interchangeable across RAF fighters, bombers, and trainers.<\/p>\n

\ud83e\udded Summary<\/b><\/b><\/p>\n

Your clock is a:<\/p>\n

WWII RAF 8-Day Cockpit Clock (Mk. IV)<\/b><\/b><\/p>\n

\u2022Air Ministry stores ref: 6A\/322<\/b><\/b><\/p>\n

\u2022Serial\/date: 6579\/41 (1941)<\/b><\/b><\/p>\n

\u2022Likely manufactured for RAF by Smiths, Jaeger, or another MoD contractor<\/b><\/b><\/p>\n

This is a genuine British wartime aircraft instrument.<\/p>\n","protected":false},"excerpt":{"rendered":"

RAF \/ Air Ministry 8-Day Aircraft Clock \u2013 Type 6A\/322 (Mk. IV Series) \ud83d\udd0d Key Markings on…<\/p>\n","protected":false},"author":1,"featured_media":229,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"exifize_date":"","footnotes":""},"categories":[5],"tags":[12,11],"class_list":["post-228","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-instrument-panel","tag-clock","tag-raf","wpcat-5-id"],"_links":{"self":[{"href":"https:\/\/concreteswan.net\/index.php?rest_route=\/wp\/v2\/posts\/228","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/concreteswan.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/concreteswan.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/concreteswan.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/concreteswan.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=228"}],"version-history":[{"count":2,"href":"https:\/\/concreteswan.net\/index.php?rest_route=\/wp\/v2\/posts\/228\/revisions"}],"predecessor-version":[{"id":232,"href":"https:\/\/concreteswan.net\/index.php?rest_route=\/wp\/v2\/posts\/228\/revisions\/232"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/concreteswan.net\/index.php?rest_route=\/wp\/v2\/media\/229"}],"wp:attachment":[{"href":"https:\/\/concreteswan.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=228"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/concreteswan.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=228"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/concreteswan.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=228"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}