I wonder about some of the "expert´s" comments here - no offense intended!
I do not want to show off with my knowledge about this kind of stuff but I have dedicated more than 25 years in studying and collecting these 30mm chronometers and I think I know what I am talking about.
1) The case and movement are correct for a Ref. 2410 chronometer with screw down case back - however the winding crown is a wrong replacement. Hands are correct except the second hand which should be blued steel.
This reference was not a military issued one - it was more some kind of a "scientific watch"
2) the spacer ring between the movement and case band is an absolute necessity to hold the movement in place, to prevent it from "floating around" and center the dial. This spacer ring is used on many of the early screw back SS Omega cases and it does not matter at all if it is a military case ref. or not! This spacer ring is not present with gold cases as the movement comes out from the front after removing the bezel and the movement holding screws.
With the SS screw back cases it is different: the movement comes out from the back - hence no movement holding screws and the necessity of the spacer to hold and position the movement/dial combo.
3) The dial:
a) it could be the original dial plate which was restored in the wrong way omitting the "chronometre" in the branding.
b) it is a replacement dial from let us say Ref. 2179 or 2384 which was redone also (does not matter if it derived from a military issued or civilian version of these refs. as they shared the same dials.
As it is a dial in redone condition nobody will be able to tell the origin - I can only tell it is a redone dial.
The presence or absence of "SWISS" or "SWISS MADE" on the dial is no indication whether the dial is original or not - nor any hint whether it was for military or civilian use. In that era sometimes the swiss marking was used and sometimes not - seems to be random use, I have not found any logic pattern yet.
My final assessment:
The watch is an uncommon reference (not really rare hence I say uncommon) and coveted by collectors if it is all original - and this includes an original unmolested/unrestored dial. The original dial represents about 40-50% of the value on these watches.
So you have to deduct about half of the value...
The condition of the movement is decent, not really outstanding or near mint.
A mediocre example.
I realized that you have listed the watch on ebay with a pretty much "fantastic" description to say the least (I do not want to call it deceptive as I assume you lack the knowledge to give a proper description) and your price expectation is somewhat very "optimistic".
Maybe my comments here help you to "update" your item description to the truth...
kind regards