![The comfort of familiarity: A Seiko Sea Lion Weekdater from 1966 | Adventures in Amateur Watch Fettling The comfort of familiarity: A Seiko Sea Lion Weekdater from 1966 | Adventures in Amateur Watch Fettling](https://adventuresinamateurwatchfettling.files.wordpress.com/2017/04/weekdater-steel-case.jpg)
The comfort of familiarity: A Seiko Sea Lion Weekdater from 1966 | Adventures in Amateur Watch Fettling
![The comfort of familiarity: A Seiko Sea Lion Weekdater from 1966 | Adventures in Amateur Watch Fettling The comfort of familiarity: A Seiko Sea Lion Weekdater from 1966 | Adventures in Amateur Watch Fettling](https://adventuresinamateurwatchfettling.files.wordpress.com/2017/04/day-and-date-driving-wheels.jpg)
The comfort of familiarity: A Seiko Sea Lion Weekdater from 1966 | Adventures in Amateur Watch Fettling
![Jual Seiko Sea Lion M55 6206-9000 - Jam Tangan Vintage - Seiko Vintage - 7152953 di lapak Ryan Vintage | Bukalapak Jual Seiko Sea Lion M55 6206-9000 - Jam Tangan Vintage - Seiko Vintage - 7152953 di lapak Ryan Vintage | Bukalapak](https://s1.bukalapak.com/img/69847022402/large/data.jpeg)
Jual Seiko Sea Lion M55 6206-9000 - Jam Tangan Vintage - Seiko Vintage - 7152953 di lapak Ryan Vintage | Bukalapak
![Sea lion] [m55] [6206-8001] weekdater 26 jewels. Still works. I picked up this watch from a moving sale. I didn't think much of it until I found it again in my stuff. Sea lion] [m55] [6206-8001] weekdater 26 jewels. Still works. I picked up this watch from a moving sale. I didn't think much of it until I found it again in my stuff.](https://preview.redd.it/sea-lion-m55-6206-8001-weekdater-26-jewels-still-works-i-v0-ql58qdqd6fua1.jpg?width=640&crop=smart&auto=webp&s=75fc823105eae7c4cab0af37b1d2a33b22dbe31f)
Sea lion] [m55] [6206-8001] weekdater 26 jewels. Still works. I picked up this watch from a moving sale. I didn't think much of it until I found it again in my stuff.
![1966 Seiko “Sea Lion” M55 Weekdater Automatic 37mm (Japanese 1st Generation Day-Date) DiaShock, Luxury, Watches on Carousell 1966 Seiko “Sea Lion” M55 Weekdater Automatic 37mm (Japanese 1st Generation Day-Date) DiaShock, Luxury, Watches on Carousell](https://media.karousell.com/media/photos/products/2021/4/21/1966_seiko_sea_lion_m55_weekda_1619018953_d1f6f26a_progressive.jpg)
1966 Seiko “Sea Lion” M55 Weekdater Automatic 37mm (Japanese 1st Generation Day-Date) DiaShock, Luxury, Watches on Carousell
![Sea lion] [m55] [6206-8001] weekdater 26 jewels. Still works. I picked up this watch from a moving sale. I didn't think much of it until I found it again in my stuff. Sea lion] [m55] [6206-8001] weekdater 26 jewels. Still works. I picked up this watch from a moving sale. I didn't think much of it until I found it again in my stuff.](https://preview.redd.it/sea-lion-m55-6206-8001-weekdater-26-jewels-still-works-i-v0-u1i0crcd6fua1.jpg?width=1200&format=pjpg&auto=webp&s=d3a7f74944ac14411d20340d8ae6e552026dbeea)
Sea lion] [m55] [6206-8001] weekdater 26 jewels. Still works. I picked up this watch from a moving sale. I didn't think much of it until I found it again in my stuff.
![Seiko 6206B installed in a Seiko Sea Lion M55 Week dater from 1966 | Seiko diver, Seiko, Seiko watches Seiko 6206B installed in a Seiko Sea Lion M55 Week dater from 1966 | Seiko diver, Seiko, Seiko watches](https://i.pinimg.com/736x/ba/00/8f/ba008f47268c2e7829564b4a7c2615b5--sea-lions.jpg)
Seiko 6206B installed in a Seiko Sea Lion M55 Week dater from 1966 | Seiko diver, Seiko, Seiko watches
![The comfort of familiarity: A Seiko Sea Lion Weekdater from 1966 | Adventures in Amateur Watch Fettling The comfort of familiarity: A Seiko Sea Lion Weekdater from 1966 | Adventures in Amateur Watch Fettling](https://adventuresinamateurwatchfettling.files.wordpress.com/2017/04/worn-gold-plate.jpg)
The comfort of familiarity: A Seiko Sea Lion Weekdater from 1966 | Adventures in Amateur Watch Fettling
![Vintage Seiko Sea Lion M55 Automatic Watch Jan.1967, Men's Fashion, Watches & Accessories, Watches on Carousell Vintage Seiko Sea Lion M55 Automatic Watch Jan.1967, Men's Fashion, Watches & Accessories, Watches on Carousell](https://media.karousell.com/media/photos/products/2022/7/8/vintage_seiko_sea_lion_m55_aut_1657262315_3ff486aa.jpg)
Vintage Seiko Sea Lion M55 Automatic Watch Jan.1967, Men's Fashion, Watches & Accessories, Watches on Carousell
![The comfort of familiarity: A Seiko Sea Lion Weekdater from 1966 | Adventures in Amateur Watch Fettling The comfort of familiarity: A Seiko Sea Lion Weekdater from 1966 | Adventures in Amateur Watch Fettling](https://adventuresinamateurwatchfettling.files.wordpress.com/2017/04/seiko-6206-9000.jpg)
The comfort of familiarity: A Seiko Sea Lion Weekdater from 1966 | Adventures in Amateur Watch Fettling
![The comfort of familiarity: A Seiko Sea Lion Weekdater from 1966 | Adventures in Amateur Watch Fettling The comfort of familiarity: A Seiko Sea Lion Weekdater from 1966 | Adventures in Amateur Watch Fettling](https://adventuresinamateurwatchfettling.files.wordpress.com/2017/04/weekdate-26-jewels.jpg)