Seiko Lord Matic (LM) Ref. 5606-7000
Dress Watch · Seiko (Suwa Seikosha factory). Historically positioned as a high-tier executive watch just below the King Seiko and Grand Seiko lines.
Period: Vintage / Suwa Seikosha (1960s-1970s). The design features Grammar of Design elements like sharp lug transitions and a C-shaped case typical of late 60s Japanese horology.
Type
Dress Watch
Brand
Seiko (Suwa Seikosha factory). Historically positioned as a high-tier executive watch just below the King Seiko and Grand Seiko lines.
Movement
Automatic, Seiko Caliber 5606, 21,600 bph, 23 Jewels, featuring hacking, hand-winding, and a quick-set day/date function.
Dimensions
Case diameter: 36mm; Thickness: 10mm; Lug-to-lug: 41mm; Lug width: 18mm. It wears larger due to the hooded lug design.
Description
The Seiko Lord Matic 5606-7000 is a quintessential piece of Japanese mid-century design. Utilizing a 'One-Piece Case' look with hooded lugs, it bridges the gap between a tool watch and a formal dress watch. The sunburst dial and applied 'LM' logo signify its prestige within the vintage Seiko catalog, offering high-beat refinement during the peak of the mechanical era.
Key Features
Applied LM logo; Suwa logo on dial; 5606 high-quality movement; hooded lug 'C-case' geometry; dual-language day wheel (English/Kanji).
Dial Description
Sunburst silver dial with a fine radial texture; applied polished baton indices with black central strips; polished dauphine hands; day-date complication at 3 o'clock with a framed window.
Case Material
Stainless Steel with a brushed horizontal finish on the front for the hooded lugs and a polished side profile.
Crystal Type
Acrylic/Plexiglass, box-shaped or slightly domed, characteristic of high-end vintage Seikos from the late 1960s.
Bezel Details
Fixed integrated bezel, polished finish, flush with the mid-case design for a seamless silhouette.
Crown & Pushers
Recessed push-pull crown at 3 o'clock, unsigned, integrated into the case side to preserve the circular profile.
Bracelet or Strap
Black alligator-grain leather strap; aftermarket; non-original hardware likely consisting of a standard pin buckle.
Caseback Details
Solid, screw-down stainless steel caseback. Historically would feature the Suwa Seikosha spiral logo and a serial number beginning with the year/month.
Movement Type
Automatic, Seiko Caliber 5606, 21,600 bph, 23 Jewels, featuring hacking, hand-winding, and a quick-set day/date function.
Water Resistance
Non-water resistant ('Water Proof' or 'Water Resistant' marking may exist but gaskets are likely degraded). Keep away from moisture.
Origin & Provenance
Japan. Features 'Japan 5606 -7001T AD' dial code, indicating in-house manufacture in Suwa.
Age Estimate
Circa 1968-1974. Most likely 1969 based on the dial code and specific case shape.
Cultural Significance
Represented the emerging Japanese middle-class 'Salaryman' success in the 1970s. It proved Japan could produce thin, accurate, and reliable automatics that rivaled Swiss Chronometers.
Condition Notes
Very Good. The case retains sharp factory brushing on the top and crisp edges. The dial is exceptionally clean with no visible patination. The acrylic crystal appears clear.
Value Estimate
$250 - $450 USD. Values fluctuate based on the condition of the quick-set mechanism and original bracelet presence.
Care & Maintenance
Avoid using the quick-set date at night to prevent breaking the fragile plastic rocker gear. Suggest a service every 5-7 years. Not water resistant by modern standards.
Similar Watches
Seiko King Seiko 5626, Omega Constellation 'C-Shape', Rolex Datejust 1601 (for the refined aesthetic).
Interesting Facts
The 5606 movement was used as the base for many King Seiko movements, but it famously has a plastic day-date rocker gear that is prone to breaking if quick-set between 9 PM and 3 AM.