USA, WW2 - c1942, Waltham 8-Day Tank Clock, Sherman Tank Type, Post-War Desk Conversion

*USA, WW2 - c1942, Waltham 8-Day Tank Clock, Sherman Tank Type, Post-War Desk Conversion*

An original World War II period Waltham 8-Day Tank Clock, the type fitted to American armoured vehicles including the M4 Sherman tank, dating to circa 1942. The clock is housed in a 95mm case and retains its original black military-pattern dial with Arabic numerals, outer minute track, and sword hands. The dial is signed Waltham / 8 Days below the 12 o’clock position.

This specific example underwent a post-war civilian conversion for home display. The original military clock body is mounted into a substantial brushed aluminium shield-form backing plate and secured to a shaped dark wooden desk base with a protective green felt underside. Such conversions became popular with returning servicemen and military surplus dealers during the late 1940s and 1950s, transforming rugged vehicle instruments into practical desk and mantel timepieces.

The polished brass bezel is particularly notable. These instruments originally left the factory with a matte black anti-reflective military coating intended to reduce tactical glare inside armoured vehicles. The current polished appearance reflects its post-service cosmetic refurbishment and decorative adaptation for domestic life. The black dial remains clear and highly legible, with all principal markings crisply visible. The Arabic numerals and hands retain their original luminous application, now heavily aged to a darkened brownish tone consistent with wartime Radium-226 luminous compound. As with many military clocks of this era, the luminous material should be regarded as a delicate historical feature and left entirely undisturbed.

The movement currently runs when wound, though it has not been tested for long-term duration or timekeeping accuracy.

Approx. Measurements: Clock diameter: 95mm. Overall mounted height: approximately 14cm. Base width: approximately 19.8cm.

History Note:
Waltham 8-Day clocks were among the standard timepieces fitted to American armoured fighting vehicles during the Second World War, including the famous M4 Sherman tank. Mounted within the crew compartment, these robust spring-driven clocks provided reliable timekeeping independent of the vehicle’s electrical system, an essential feature during long operations, artillery coordination, convoy movements, and synchronised attacks.

The M4 Sherman, introduced in 1942, became the principal medium tank of the United States and Allied forces throughout the war, serving extensively in North Africa, Italy, Northwest Europe, and the Pacific. Sherman crews operated in extremely harsh conditions involving vibration, dust, heat, cold, and constant movement, requiring instruments that were simple, durable, and dependable under combat conditions.

Waltham Watch Company, already highly respected for precision military and railway timepieces, produced a range of 8-day vehicle clocks for wartime contracts. Their long-running mechanical movements could operate continuously for over a week from a single winding, making them particularly suitable for tanks and other military vehicles where electrical reliability could not always be guaranteed.

Following the war, many surplus tank clocks were removed from redundant military vehicles and converted into civilian desk or mantel clocks by veterans and surplus dealers. These conversions, often mounted on polished wooden bases or decorative plaques, became popular commemorative pieces during the late 1940s and 1950s and remain highly collectible today.

*Condition*
Movement currently runs when wound, though untested for duration or accuracy. Dial remains clear with expected minor age wear and all markings legible. Luminous material heavily aged and darkened. Brass bezel polished during post-war civilian conversion. Aluminium mounting plate and wooden base remain structurally solid and present well. General handling wear, surface patination, and minor age marks throughout consistent with wartime manufacture and subsequent mid-century adaptation. Please review all accompanying high-resolution photographs, as they form an integral part of the condition report.

JAQ#3266#AGO_17062026