![Seiko Slide Rule vintage chronograph automatic watch Cal 6138 Ref 6138-7000 Seiko Vintage watches - Watches83 Seiko Slide Rule vintage chronograph automatic watch Cal 6138 Ref 6138-7000 Seiko Vintage watches - Watches83](https://watches83.com/14820-large_default/seiko-slide-rule-vintage-chronograph-automatic-watch-cal-6138-ref-6138-7000.jpg)
Seiko Slide Rule vintage chronograph automatic watch Cal 6138 Ref 6138-7000 Seiko Vintage watches - Watches83
![Seiko CALCULATOR SLIDE RULE Vintage automatic chronograph... for $2,879 for sale from a Trusted Seller on Chrono24 Seiko CALCULATOR SLIDE RULE Vintage automatic chronograph... for $2,879 for sale from a Trusted Seller on Chrono24](https://cdn2.chrono24.com/images/uhren/24871896-bsiycyh9jnhjvfbbzqubx3ld-ExtraLarge.jpg)
Seiko CALCULATOR SLIDE RULE Vintage automatic chronograph... for $2,879 for sale from a Trusted Seller on Chrono24
![Seiko 5 Sports Automatic Beige Dial Black Lerather Men's Watch SRP615 4954628185952 - Watches, Other - Jomashop Seiko 5 Sports Automatic Beige Dial Black Lerather Men's Watch SRP615 4954628185952 - Watches, Other - Jomashop](https://cdn2.jomashop.com/media/catalog/product/s/e/seiko-5-sports-automatic-beige-dial-black-lerather-mens-watch-srp615.jpg)
Seiko 5 Sports Automatic Beige Dial Black Lerather Men's Watch SRP615 4954628185952 - Watches, Other - Jomashop
![SRP611K] I get more comments on this watch than any other - my trusty Seiko 5 Pilot watch with a slide rule, powered by 4R36 auto with hack/wind. 45mmx13mm. Matched with a SRP611K] I get more comments on this watch than any other - my trusty Seiko 5 Pilot watch with a slide rule, powered by 4R36 auto with hack/wind. 45mmx13mm. Matched with a](https://i.redd.it/6t5qe40oywy51.jpg)
SRP611K] I get more comments on this watch than any other - my trusty Seiko 5 Pilot watch with a slide rule, powered by 4R36 auto with hack/wind. 45mmx13mm. Matched with a
![Seiko CALCULATOR SLIDE RULE Vintage automatic chronograph... for $2,879 for sale from a Trusted Seller on Chrono24 Seiko CALCULATOR SLIDE RULE Vintage automatic chronograph... for $2,879 for sale from a Trusted Seller on Chrono24](https://cdn2.chrono24.com/images/uhren/24871896-x6xomlkg2lyd9fj6g3f3hdl4-ExtraLarge.jpg)
Seiko CALCULATOR SLIDE RULE Vintage automatic chronograph... for $2,879 for sale from a Trusted Seller on Chrono24
![Seiko Rare Calculator Slide Rule Vintage Automatic Chronograph... for $2,546 for sale from a Trusted Seller on Chrono24 Seiko Rare Calculator Slide Rule Vintage Automatic Chronograph... for $2,546 for sale from a Trusted Seller on Chrono24](https://cdn2.chrono24.com/images/uhren/25336892-4ug1w9j0knmed7p4dm4075l7-ExtraLarge.jpg)
Seiko Rare Calculator Slide Rule Vintage Automatic Chronograph... for $2,546 for sale from a Trusted Seller on Chrono24
![Seiko -“Calculator” Slide Rule Automatic Chronograph Wrist Watch - 6138-7000- Men - 1970-1979 in Turkey Seiko -“Calculator” Slide Rule Automatic Chronograph Wrist Watch - 6138-7000- Men - 1970-1979 in Turkey](https://gcp-la8-storage-cdn.lot-art.com/public/upl/43/Seiko-Calculator-Slide-Rule-Automatic-Chronograph-Wrist-Watch-6138-7000-Men-1970-1979_1601132488_8071.jpg)