Help me identifying “1930 art deco omega” !!

W Wilk919

Here is a same question:
New fav arrived from Japan: 1930's cal.20F.
There is no Omega sign in the case, but you can see in the back an "SPM" identification.
I found a name: J. Schnelwar & Sons. It was a jeweller company in New York in the early 1900's.
Material of case seems platinum, but not tested yet.
Has anyone seen this kind of Omega case before?

Tire-comedon

Also not an Omega case.
And a redone dial.

W Wilk919

Thanks for answer.
There is a lot of this type curved case with Omega stamp, without engraving. I guess it's an original case, and could be a custom order from Schnelwar&Sons.
On what points do you think this isn't a factory part?/redone dial?

Tire-comedon

Hello,
The engraving outside of the case is not Omega signing, the serial number is also not Omega. There was a steel or gold rectangle watch with caliber 20F and later T17, slightly less curved than yours, with ref CK730, but it's a different shape.

Regarding the dial, it has the wrong font for the name Omega and the Logo is also not correct.

I should add to be complete that the hands style is typical for the 40s but not the 30s.

But the case is very beautiful and can well be a national production. Omega used to sell calibers+dial+hands to some foreign dealers (with cheaper customs taxes applicable to watch parts than to complete watches) and let those authorised dealers case and sell them.