I inherited my grandfather's Seamaster which he used on a daily basis as skipper on his fishing boat back in the 1950s. After having it serviced, i ordered an extract from the archives.
I had already been looking up on the numbers, and was certain it was from 1952 due to the 13.XXX.XXX-intervals, but on the extract it says "Production: June 20, 1955". Am I misunderstanding something or is this a mistake?
Is it to be understood as the actual production date and how do you think this correlates with the movement number being 13.922.984. It's a CK 2577 (C-2577-6 SC) with the 354-calibre.
Also, do anyone know when Omega stopped production of the Bumper-movement?

Thank you
Niclas, Denmark

 

Hi Niclas,
sorry I can't answer your questions but I want to thank you for sharing the history of your watch and the collage with the photograph.
The patina on the dial adds a lot of character to the watch and makes me think of storms, wind, waves and sunshine reflected by the sea...
Nice post!

 

I have a waffle dial that starts with 13.62 that I'd always thought was from '52.

 

Thank you, it sure adds some to the history that it spent much of it's life on the North Sea with him. I was told he specifically went for an automatic so that it could hang in the wheelhouse during deck work, rewinding itself thanks to the waves of the sea.

 

Hi there,

I am no expert but was lead to believe the 1952 date would be when the movement was made however movements were often made and kept in stock until required. the EftA date of 1955 would be when the watch itself was assembled and sent out.

Hope this is broadly correct and assists

 

The square logo points to a post-1952 date to me, so I am not completely surprised. Still a late date for a 13.X movement!

 

That's a sound theory, I guess it's hard to ascertain what the procedure was back then. It just seems like a long time, from production in 1952 to assembly in 1955. But who knows

 

It might also be a typo, there was a typo in someone's speedmaster extract in another thread. But I'm more leaning towards the date being the sale/delivery date. It's always confusing which kind of date they are giving you in the extract..