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The Encyclopedia of Horology

Clock · Aircraft dashboard clock

Smiths WW2 8 Day Aircraft Dashboard Clock Mk IIC Ref. 6A/1104

Partially verified

This individual British military aircraft cockpit clock is catalogued as an 8-day manual timepiece manufactured by Smiths. According to source details, the dial is marked Mark IIC with model reference 6A/1104 and serial number 21207/41, denoting 1941 production. The cylindrical powder-coated aluminium case measures approximately 54 mm across the bezel and is affixed to a mounting backplate. It features a matte black dial with Arabic numerals, cathedral hands, an auxiliary red-tipped dummy pointer adjusted via a central knurled brass knob, and a lower protruding stem for winding and setting. The rear plate bears an Air Ministry AM crown stamp.

Front oblique view of Smiths Mk IIC 8-day aircraft dashboard clock showing dial, hands, central dummy-hand knob, and winding stem
Front oblique view of Smiths Mk IIC 8-day aircraft dashboard clock showing dial, hands, central dummy-hand knob, and winding stem — Vintage Watch Specialist. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
vintagewatchspecialist.com
Category
Clock · Aircraft dashboard clock
Maker / attribution
Smiths
Reference
6A/1104
Catalogue / lot identifier
vws2064
Source-reported date
1941
Country
United Kingdom
Source-reported serial
21207/41

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Object Identity and Documentation

This timepiece is identified as a Smiths 8-day aircraft clock, marked as 'Mark IIC' with reference '6A/1104'. The dial features the serial number '21207/41', which is associated in the source with a 1941 production date.

The seller describes the item as having been produced for and fitted to various aircraft, including Mosquitos, Lancasters, Spitfires, and Sunderlands. The reported movement is a 7-jewel mechanical caliber.

Evidence for this section
  • “The dial is marked 6A/1104 Mark IIC and 21207/41 indicating manufacture in 1941”
  • “These clocks were produced and fitted to Mosquitos, Lancasters, Spitfires and Sunderland planes amongst others.”
  • “Jewels: 7”

Construction and Exterior

The clock is housed in a powder-coated aluminium case with a bezel width of 54 mm. The dial is black with Arabic numerals and cathedral-style hands.

The luminous substance on the Arabic numerals and hands is noted as having aged to a chocolate color and showing signs of deterioration.

Evidence for this section
  • “Case: Powder Coated Aluminium”
  • “Width (without crown): 54mm”
  • “The lume on the alternate Arabics has aged to nice chocolate colour along with the remaining lume on the hands which has deteriorated a little more.”

Controls and Markings

The clock includes a central pin on the dial for adjusting a dummy hand, and a pin at the bottom right for winding and setting the time. The rear mounting plate is reported to bear an Air Ministry (AM) crown stamp.

The Air Ministry stamp and the internal movement are not visible in the provided photographic documentation.

Evidence for this section
  • “The dummy hand is in tact and is wound using the central pin on the dial.”
  • “The time is set using the pin at the bottom right of the clock.”
  • “The backplate is marked with the AM & crown stamp”

Open research questions

  • Can the association with specific aircraft types be confirmed via military contract logs for reference 6A/1104?
  • What is the current mechanical condition and accuracy of the 7-jewel movement?
  • Does the reported Air Ministry stamp align with standard markings for Smiths 6A/1104 instruments produced in 1941?

Source evidence

Recorded claims and source quotations for Smiths WW2 8 Day Aircraft Dashboard Clock Mk IIC Ref. 6A/1104
FieldSource-reported valueSource quotation
Model Reference6A/1104“Model ref: 6A/1104”
Mark DesignationMark IIC“The dial is marked 6A/1104 Mark IIC and 21207/41”
Date of Issue1941“Date of issue: 1941”
Jewel Count7 Jewels“Jewels: 7”
Case MaterialPowder Coated Aluminium“Case: Powder Coated Aluminium”
Backplate MarkingsAM & crown stamp“The backplate is marked with the AM & crown stamp, denoting it as property of the MoD.”

Visible details

  • Matte black dial marked '8 DAYS', 'MK. IIC', 'REF. Nº 6A/1104', and serial number '21207/41'
  • Aged luminous substance on the Arabic numerals and skeleton cathedral hands
  • Central knurled brass knob adjusting a slim red-tipped indicator pointer
  • Flanged mounting plate behind cylindrical casing with corner fixing apertures and visible edge wear
  • Knurled winding and setting stem projecting diagonally from the lower right of the bezel

Research qualifications

  • Source-reported internal 7-jewel movement and rear Air Ministry stamp are not visible in the provided image
  • Historical aircraft application types (Mosquito, Lancaster, Spitfire) are general historical associations reported by the seller rather than specific to this documented airframe

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

Smiths WW2 8 Day Aircraft Dashboard Clock - Model ref: 6A/1104 - 1941 – Vintage Watch Specialist

Reviewed 2026-10-22 · Record 69f470f244

Terms in this record

Glossary explanations for terms named in this object’s record.