Seiko Bell-Matic automatic alarm wristwatch, ref. 4006-6027
Record status
Individual type · partial
Period
April 1973
Maker / issuer
SeikoThis is a vintage Seiko Bell-Matic automatic alarm wristwatch, reference 4006-6027, dated by the seller to April 1973. It is fitted with a 17-jewel mechanical movement featuring an automatic winding system for timekeeping, a manual-wind alarm function, and a day/date complication.
The stainless steel cushion-shaped case measures 39 mm in diameter and includes an outer blue enamel bezel insert. Its dark blue dial presents silver-tone baton indices, a day-date aperture at 3 o'clock, an internal rotating alarm bezel ring, and a red central seconds hand.
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
- Alarm wristwatch
- Reference
- 4006-6027
- Jewel Count
- 17 jewels
- Case Diameter
- 39 mm
- Reported Date
- April 1973
- Serial Number
- 340178
- Place recorded
- Japan
- Maker / attribution
- Seiko
Design
- Visible features
- • Stainless steel cushion case with a blue outer bezel ring. • Dark dial with day-date display at 3 o'clock and an inner alarm ring. • Crown positioned near 3 o'clock with an alarm pusher button at 2 o'clock.
- Case and Exterior
- The timepiece features a stainless steel cushion-shaped case measuring 39 mm in diameter, with a lug-to-lug measurement of 43 mm and a thickness of 13.4 mm. The case features a radial brushed finish and is paired with a blue enamel bezel insert. The case back is marked 'Seiko Time Corp. SEIKO Stainless Steel 4006-6027 Water Resistant 340178 Japan A'. The watch is equipped with a stainless steel fold-over clasp bracelet.
- Dial and Complications
- The watch features a dark blue dial with silver baton hour markers, luminous dot accents, and silver/luminous sandwich hands. A red central sweep seconds hand is present, alongside a day-date aperture located at 3 o'clock. An internal rotating bezel ring is used for the alarm function, which includes a luminous indicator. The date quickset is operated via a pusher at 2 o'clock, while the day indicator is set by rotating the time between 22:30 and 1:00.
- Movement and Documentation
- The watch utilizes an automatic movement with a manual-wind alarm function and 17 jewels. The listing provides inconsistent information regarding the specific caliber, referencing 'Cal. 4006A' in the description text and 'Cal. 4005A' in the technical specifications section. The movement has not been independently verified.
Identification
- Reference
- 4006-6027
- Serial number
- 340178
- 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: The text gives contradictory caliber references, listing Cal. 4006A in the description and Cal. 4005A under movement notes.
- Research required: Movement and case back are not directly depicted in the provided photos.