Help identifying this vintage Seamaster

I have this 11.6M, no branding on dial or caseback:

https://omegaforums.net/threads/wruw-today.567/page-7003#post-1435131

Dear all,

Getting back to you with the further details, as discussed, after opening. So the back popped off easily, and below are pictures of what we see.

Thus:

-- OMEGuy expected that the serial would be in the low 11 millions, and it is 10,405,838 (see below). I guess that would place it in the 1944-1947 range.
-- Bumper and others suggested different reference numbers, and the number here is 2321/6.
-- I see very faint hand inscriptions on the inside of the backing, and can use light at an angle and magnifying glass to decipher if that helps.

Given this, does that narrow down the model and value? How to proceed? I didn't feel comfortable with the local watchmaker taking of the crystal, but I can find one that can to tackle the redial question?

BTW, just paging through an image search of "Omega vintage seamaster" the one that was closest in overall appearance (except for the dial) was this one on Ebay, which also has a middle 10 million serial, the same thick crystal and appearance, and the same 2/4/6 numbering plus elevated silver dots at the 1/3/5 etc. positions.

Thanks.

PICTURES:

Not a Seamaster, just a non-model Omega.

Thanks hoipolloi and Rochete for your resolution of this issue. So it seems that it is a non-model Omega from 1945-47 that was redialed with a Seamaster dial, is that right?

So, what would one do with this? Does it have value/worth to anyone, and how to get it to them?

Thanks.