First off, thank you everyone who commented and helped me on my previous post in identifying this watch! A few days ago I got in contact with a local seller who as downsizing his collection. Most of the watches were fairly inexpensive but he said he had an Omega Constellation from the 1950s. This was the photo I received:


The case looked very nice as did the hands and crown. The dial looked a bit worn, which I partially attributed to lighting. Unfortunately the seller did not have photos of the movement and did not want to open it so I took a bit of a risk and came to a deal without seeing the movement (I know, a big no no ). I picked up the watch a few days ago and the dial looks A LOT better in normal lighting. I have attached a few photos in different lighting. The case to me appears unpolished with original hallmark and sharp lines inside the lugs. The caseback is also very crisp with original embossing remaining on the observatory logo:


Today I finally had the chance to take it to a watchmaker to have the caseback opened safely. Unfortunately, it is not a 352 RG as I had hoped but a 354 bumper movement. The 13.9 mil serial dates it to 1953/1954. The interesting thing is the caseback. It shows English assay marks and is marked "OWC" but also retains the Swiss Helvetia. Has anyone seen this before? The reference is 2648 as other members previously guessed.



As an added bonus, the seller retained the original buckle after all these years, marked "MWF" 9K. This also fits with a British delivery!

 

VERY nice!. WOW!.

 

Congrats! Nice find.

 

Very nice watch!

Maybe a Swiss made watch that was sold in the UK and received a British control hallmark?

 

I think that is correct! I was chatting with Desmond about this as well and that was his thought.

 

@1jansen Here are the full pictures and story!

 

Mike, A wonderful hunting story! Enjoy !
By the way, would you mind to tell us the final price of the watch? Is it within my estimste?
Thanks,
1jansen

p.s. I would say "yes" to that said by respectful Penpin and respectful Desmond re English hallmarks.

 

Congrats on a great Pie Pan connie

 

Nice watch!

 

Import mark and London Date Letters "U" = 1955

 

Very helpful @diathienthai ! I was considering getting an Extract for this one, but given the British assay marks and British buckle, it is almost certain that this one was delivered to England.

 

Very useful [USER = 27099] [USER = 27099] @diathienthai [/ USER] [/ USER]! I have considered taking an extract for this one, but with the British evaluation marks and British locks, it is almost certain that one of these was moved to England.

 

+1. The movement serial no.of 13.9m matchs a year of manufacture of 1954. All matching. Congratulations Mike!