Seiko - Bell-Matic 'Serviced' - No reserve price - 4005-7000 - Men - 1968

Presented for auction by Second Vintage

This sought-after Seiko Bell-Matic is powered by the desirable 4005 date-only caliber, a mechanical alarm movement produced for a notably short window. Featuring an exceptionally clean and crisp white dial that contrasts beautifully with its worn gold-plated case, this 27-jewel automatic timepiece represents a highly collectible variant of Seiko's famous mechanical alarm watch.

Brand: Seiko
Model: Bell-Matic
Reference Number: 4005-7000
Serial Number: 8N2176
Movement: Automatic mechanical alarm, caliber 4005, 27 jewels
Dial: Crisp white dial with applied gold-tone indices and black inserts
Case Size: 37 mm (excluding the crown)
Case Material: Gold-plated, stainless steel caseback
Production Year: 1968
Condition: Good vintage condition. Movement serviced on 16 October 2026. Timegrapher: +10+12s/day, performing remarkably well.

Dial and Hands
The exceptionally clean and well-preserved crisp white dial stands out beautifully, showing no visible staining or moisture damage. Its applied gold-tone indices feature black inserts that are clean and well-preserved, perfectly matched by the gold-tone dauphine hands with their own black central stripes. The printed text remains sharp and fully intact. Under magnification, the well-preserved hands exhibit minor surface oxidation but show no significant corrosion or deformation, perfectly complementing the dial furniture.

Case and Crystal
The gold-plated case displays honest wear consistent with age, exhibiting visible scratches and handling marks throughout. Typical plating degradation and oxidation are visible on high-contact areas, particularly along the lug edges and case flanks. The smooth gold-plated bezel shows visible scratches, minor dings, and some plating wear along its edges. An unsigned gold-tone knurled crown sits at 3 o'clock, alongside an alarm pusher at 2 o'clock that also shows some plating wear. The stainless steel caseback features clear, legible engravings. A domed acrylic crystal protects the dial, showing minor surface scratches and some scuffing along the outer edges, but remaining free of deep cracks or chips.

Movement
Powering the watch is the clean 27-jewel Seiko caliber 4005 automatic movement. The rotor and bridges are well-preserved, displaying no visible corrosion or heavy oxidation, while the screws and components appear intact and undisturbed. Clear engravings read "SEIKO", "27 JEWELS", and "JAPAN". Exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece. The timegrapher recorded a strong rate of +10+12s/day. The movement was serviced on 16 October 2026.

Strap
The watch is fitted with a black leather strap featuring white contrast stitching, showing light creasing and signs of gentle use. This strap pairs well with the dial's black accents.

Condition
Good vintage condition. The movement was serviced on 16 October 2026 and, supported by the recorded timegrapher result, is performing very strongly. The crisp white dial and hands are exceptionally clean and well-preserved. The gold-plated case, bezel, and alarm pusher show visible scratches, handling marks, and plating wear consistent with age, particularly along the lugs and flanks. The domed acrylic crystal has minor surface scratches and edge scuffing. The stainless steel caseback retains clear engravings.

Dimensions
The case measures 37 mm (excluding the crown).

Remarks
This Bell-Matic offers a sought-after mechanical alarm complication within a distinctive date-only format. The striking preservation of the dial provides a fantastic visual contrast against the honest, aged character of the gold-plated case, making it a compelling addition for collectors of specialized mid-century Seiko calibers.

History
Seiko's Bell-Matic line is celebrated for bringing the mechanical alarm complication to a wider audience with robust, reliable engineering. The caliber 4005 is particularly notable among collectors as the only date-only Bell-Matic movement produced, manufactured for a brief window during 1968 and 1969. In these models, the watch's mainspring is wound automatically by Seiko's magic lever mechanism, allowing the crown to be used exclusively for winding the alarm spring. All Bell-Matics housing this specific 4005 caliber were equipped with a 27-jewel movement. The 4005-7000 reference is recognized for its distinctive oval cushion case design, offering a unique profile within the brand's celebrated mechanical alarm family.

Payment and Shipping
Payment must be completed within 1–3 days after purchase.
Your watch will be professionally and securely packaged, then shipped with tracking and insurance for your peace of mind.
We use fast express shipping, with typical delivery within 1–4 business days, depending on the destination.
Please note that vintage watches may show minor signs of wear, aging, or imperfections, which are considered normal for watches of this age.
We kindly ask you to review all photos carefully before bidding. We photograph each watch from multiple angles to provide the most accurate representation possible, and the photos form an important part of the description.
The timegrapher assessment if provided is seen as an indication of the movement’s condition under fully wound testing conditions. As with all vintage watches, results may vary in daily use.
If you have any concerns regarding functionality or defects after delivery, please contact us within 3 days of receiving the watch so we can assist you.
As with all used watches, water resistance is not guaranteed.
If you have any questions, feel free to contact us after the auction ends.

/ Second Vintage

SKU: SEI-BNX-0001