Waltham Aircraft Clock Model Ref. A-13A-1
Record status
Individual type · partial
Period
c. 1960s
This Waltham aircraft cockpit clock and elapsed-time timer, reference A-13A-1, dates to circa the 1960s according to the source. The unit is housed in a square-fronted, black powder-coated aluminum casing measuring 60 mm across with diagonally arranged mounting apertures.
The matte black dial displays aged vanilla-toned luminous Arabic hour numerals, an outer elapsed-time track graduated from 5 to 60, and three exposed dial screws. Four center-mounted hands operate along coaxial shafts to present standard timekeeping alongside independent elapsed minutes and seconds. The seller states the clock is powered by a 20-jewel, 8-day mechanical movement.
Evidence at a glance
- Linked sources
- 1
- Photograph views
- 1
- Catalogue references
- 0
Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.
Technical characteristics
- Type
- Ship's & marine clock
- Crystal
- Plexiglass
- Case Width
- 60mm
- Case Material
- Powder Coated Aluminum
- Place recorded
- United States
- Model Reference
- A-13A-1
- Movement Jewels
- 20 Jewels
- Maker / attribution
- Waltham
Design
- Visible features
- • Square black mounting plate with two diagonal screw holes (upper left and lower right). • Two diagonally positioned front control knobs (upper right and lower left). • Four coaxial central hands: broader hour and minute hands, a thin seconds hand, and an elapsed minute hand terminating in a luminous arrow tip. • Black dial with vanilla-toned luminous Arabic hour numerals and an outer chapter ring calibrated 5 to 60 with a triangular marker at 60. • Three visible screw heads securing the dial near numerals 2, 6, and 10.
- Dial and Visual Features
- The matte black dial features Arabic hour numerals and a chapter ring calibrated from 5 to 60 for the elapsed time feature. The dial is secured by three visible screw heads positioned near the 2, 6, and 10 o'clock markers. The numerals and hands exhibit vanilla-toned luminous material. Four center-mounted hands operate on coaxial shafts: two broader hands display the time, while two thinner hands function as the stopwatch minutes and seconds, which reset to the 60-position.
- Mechanical Specification
- The clock utilizes an 8-day, 20-jewel, keyless, self-starting mechanical movement. Technical specifications provided by the source state the unit includes an anti-magnetic cobalt alloy mainspring and an anti-magnetic temperature-compensated hairspring. The retail listing specifies that the movement caliber is unknown.
- Identity and Configuration
- The object is identified as a Waltham A-13A-1 aircraft clock and elapsed-time timer, which the source dates to approximately the 1960s. It features a square-fronted, powder-coated aluminum casing measuring 60 mm in width, intended for dashboard mounting. The interface includes two control knobs located on the front of the housing. The upper right knob is used to start, stop, and activate the flyback function for the elapsed time display without affecting the primary time of day.
Identification
- Reference
- A-13A-1
- Source note
- Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.
Catalogue references
No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.
Research required
- Research required: Movement caliber is stated as unknown by the retailer.
- Research required: Rear casing and military specification plate details mentioned in descriptions are not visible in the provided primary image.