There is some confusion in the world about the electric clocks installed in new Cobras. As Cobra subjects go, clocks are fairly simple.
CSX2001-CSX2200 used a Smiths® brand clock with adjustment features above the horizontal center line and text on the lower face "MADE IN ENGLAND".
(https://www.saac.com/forum/gallery/274-230523155247.jpeg)
CSX2201-CSX2589 cars used one of two known versions Cobra only clocks made as customized version of a 1962 Ford Galaxie clock. Provided by Ford Motor Company and installed by A.C. Cars Ltd.
(https://www.saac.com/forum/gallery/274-230523155318.jpeg)
Clock
S1CS-15000 (1965 service parts list) / S1CS-15000-A (1966 service parts list)
Electrically driven clocks installed in CSX2201 through CSX2589 street car chassis by A.C. Cars were Ford sourced and Cobra unique. (The May 31, 1965 edition of the SHELBY AMERICAN PERFORMANCE EQUIPMENT book the HIGH PERFORMANCE AUTOMOBILE PARTS lists on page 63 dated May 31, 1965 itemizes the assembly as "S1CS-15000 Clock, Electric w/Chrome Bezel Ford". Note that the "Chrome" coated bezel was specifically called out.)
I will not go into a lot of detail here as good coverage of the subject takes a slide show several pages in length but current (10-22-2025) evidence shows some differences between 'Galaxie' and 'Cobra' models. The slide show is available separately.
Front case shells:
Galaxie = zinc and faint zinc-dichromate coated carbon steel front case shells.
Cobra = Class A type high appearance quality front bezels for the chromium finished carbon steel front case shells.
Front case assemblies:
Galaxie = zinc and zinc-dichromated carbon steel front case shells with a black foam rubber cushion glued to it.
Cobra = chromium plating only.
Second hands:
Galaxie = yes, includes a second hand.
Cobra Version 1 = no, does not include a second hand.
Cobra Version 2 = yes, includes a second hand.
Center of lens ornamentation:
Galaxie = three-piece ornament assembly.
Cobra = one-piece ornament.
Outside of Shelby American, Inc. during the Cobra era the only similar Ford clock service kit available was the C2AZ-15A000-A kit. The kit contained a Galaxie style clock, a back light lamp socket, a back light bulb, a wire loom, and the fastener set fixing the wire loom to the clock.
Galaxie clocks may be reworked to get the appearance of the Cobra models of clocks.
(https://www.saac.com/forum/gallery/274-231025122902.jpeg)
At the present time CSX2251 is the latest by chassis number known to have apparently received a Cobra Version 1 clock and CSX2257 is the lowest by chassis number known to have apparently received a Cobra Version 2 clock. The hunt for more data is ongoing.