According to the Omega Vintage Database, this watch is Ref. CK 2048 from the late 1930's.
Reference
CK 2048
International collection
1937
MovementType:
Manual winding (mechanical)
Caliber number:
33,3 CHRO Lemania
17 jewels
Created in 1933
Functions
Tachymeter, Chronograph
Case
Stainless steel
Case back
Press-in
Dial existing with different designs
Crystal
Not available
Bracelet
Leather
Water resistance
Not available
I was able to find a 2008 auction record from Christies showing one that sold for a little less than $30K. I'll let the rarity of this piece speak for itself.
http://www.christies.com/lotfinder/watches/omega-a-fine-and-very-rare-stainless-5065186-details.aspx
OK, so maybe that one had a premium due to the black dial, but it was 2008. Values have steadily risen for rare watches since then.
I wouldn't chance sending to Omega.
That is quite a find!
gatorcpa