Thanks! I just had to pull the trigger when I saw the condition. It has been on someone’s wrist at some time, so not a 100% NOS, but damn close.

 

Yes it is.

 

I have seen that the top sides of the HF cases are “sharper” compared to CB cases on the 300’s. You can quite clearly spot the difference if you get to have a look at them in good condition. Mine is with a CB case.

What is also interesting is how the lume on mine has started to “wander” a bit, especially on the big triangle, and not as much present on yours.

I understood that Omega had this issue on the lume in the late 68-69’s if i’m correct, also found on the Speedmasters from that area?

 

You can see my previous thread for a side by side comparison between SM300 HF & CB cases:

https://omegaforums.net/threads/165-024-seamaster-300-hf-vs-cb-case.64678/

 

Yes, I saw it. (But I didn’t actually realize it was you who made the post at the time) Your post actually helped me make the decision as it confirmed my thoughts of the difference in cases and make me pull the trigger. Before I was a bit afraid that the case might have had some minor polish in the past.

 

Here’s a picture of the movement and caseback. (Fully serviced and ready for years or wear).