Seiko - Slide Rule Calculator Pilot - 6138-7000 - Men - 1970-1979
07
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Selected by Erwin Dekker
Experienced antique dealer with extensive watch collecting expertise and antiques background.
Estimate € 700 - € 850
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Seiko 6138-7000 Slide Rule Calculator Pilot, a men’s automatic stainless steel watch from the 1970s with a 44 mm case and long steel bracelet, featuring a repainted dial and aftermarket dial, bezels and slide-rule ring; original box and papers are not included.
AI-assisted summary
Description from the seller
Seiko Slide Rule aka Calculator. A pilot watch. Please search internet to see how to make calculations with its bezel and slide rule rotating ring
Most of the Seiko slide rule does not have slide rule rotating ring but this one has. Please examine the photos and you'll notice it.
Seiko's 6138 was the sophomore release to the 6139 and added a few features lacking on the former. In addition to a rolling 12 hour register for the chronograph, it could now be manually wound at the crown, and the day and date could be quick set independently. With enough design variations to suit nearly every taste, adding one to any collection is an easy decision. Adding this one however, is much easier said than done. The 7000 is easily one of the rarest and most sought after 6138s available.
● Movement Condition - Movement is very clean and works nicely. Chronograph starts, stops and resets perfectly. Movement serviced and oiled by a professional recently.
● Dial Condition - Dial is very clean, no visible fault. Roman numerals and English dual calendar. Dial, bezels, slide rule ring and hands are aftermarket.
● Case Condition - Case is very good condition, been polished by a professional. Both bezels are in great condition. Outer bezel rotates both ways smoothly. Slide rule rotating ring is present and works. Steel strap will fit up to 23 cm wrist. Steel strap is aftermarket.
● Dimentions - 44.4mm without crown, very large size for a watch of that era
● Glass - New replacement glass is perfect condition
● Timekeeping - Keeps time
● Production Year - Circa 1970's
● Service History - Serviced by an expert. Will not need service for long period of time
● Shipping - Will be packed with care and shipped insuranced with fast carriers (UPS/Fedex) Usually arrives in 2-3 days. Combined shipping for multiple items.
● Please read description carefully. I tried to explain every detail
● This watch contains aftermarket customisations without permission from the brand. This could impact the watch value and might void manufacturer warranties , Including , polishing , aftermarket dial , hands , bracelet , crystal , bezel insert , inner ring , case back , and pushers. We ask sellers to mention any known aftermarket parts. We do not guarantee water resistance on vintage watches. Please use photos as part of the description. We ask sellers to mention any known aftermarket parts. Accuracy of + or - 5 minutes per day is acceptable for vintage watches.
Seiko Slide Rule aka Calculator. A pilot watch. Please search internet to see how to make calculations with its bezel and slide rule rotating ring
Most of the Seiko slide rule does not have slide rule rotating ring but this one has. Please examine the photos and you'll notice it.
Seiko's 6138 was the sophomore release to the 6139 and added a few features lacking on the former. In addition to a rolling 12 hour register for the chronograph, it could now be manually wound at the crown, and the day and date could be quick set independently. With enough design variations to suit nearly every taste, adding one to any collection is an easy decision. Adding this one however, is much easier said than done. The 7000 is easily one of the rarest and most sought after 6138s available.
● Movement Condition - Movement is very clean and works nicely. Chronograph starts, stops and resets perfectly. Movement serviced and oiled by a professional recently.
● Dial Condition - Dial is very clean, no visible fault. Roman numerals and English dual calendar. Dial, bezels, slide rule ring and hands are aftermarket.
● Case Condition - Case is very good condition, been polished by a professional. Both bezels are in great condition. Outer bezel rotates both ways smoothly. Slide rule rotating ring is present and works. Steel strap will fit up to 23 cm wrist. Steel strap is aftermarket.
● Dimentions - 44.4mm without crown, very large size for a watch of that era
● Glass - New replacement glass is perfect condition
● Timekeeping - Keeps time
● Production Year - Circa 1970's
● Service History - Serviced by an expert. Will not need service for long period of time
● Shipping - Will be packed with care and shipped insuranced with fast carriers (UPS/Fedex) Usually arrives in 2-3 days. Combined shipping for multiple items.
● Please read description carefully. I tried to explain every detail
● This watch contains aftermarket customisations without permission from the brand. This could impact the watch value and might void manufacturer warranties , Including , polishing , aftermarket dial , hands , bracelet , crystal , bezel insert , inner ring , case back , and pushers. We ask sellers to mention any known aftermarket parts. We do not guarantee water resistance on vintage watches. Please use photos as part of the description. We ask sellers to mention any known aftermarket parts. Accuracy of + or - 5 minutes per day is acceptable for vintage watches.
Details
Brand
Seiko
Gender
Men
Model
Slide Rule Calculator Pilot
Reference Number
6138-7000
Band material
Steel
Shipped Insured
Yes
Band length
Long (over 200 mm)
Period
1970-1979
Repainted dial
Yes
Movement
Automatic
Case material
Stainless steel
Original box included
No
Original papers included
No
Case diameter
44 mm
Original warranty included
No
Condition
Very good - minor signs of wear
