Indeed a genuine Omega, although it was originally a pocket watch converted to a wrist watch and never left the Omega factory looking like that.
These are common watches on eBay and usually originate from the Ukraine (although there are other sources).
Condescendingly referred to as "marriage" watches by the sellers, and frankens by purist collectors.
Take an old pocket watch movement, put lugs on the case, re-paint the dial and there you have it.
Usually regarded with contempt by vintage collectors, they may satisfy somebody who likes the look and isn't fussed about legitimacy, provenance, originality etc.
All that matters is that it was a gift from your brother, so wear it and enjoy it for what it is.
Cheers
Jim
Click to expand...