Expert advice needed: Which watch…

Posts
120
Likes
173
…might this case back have come from?
Dial unsigned apart from ‘omega’
Cal 420
Asking for a friend

Cheers in advance👍
 
Posts
5,631
Likes
5,812
Looks like US collection from the number and the case OEM. Google told me it was an Omega watch without a model name.

You can Google too.
 
Posts
24,613
Likes
54,656
I think the "J" indicates a case made by Jonell.
 
Posts
13,445
Likes
18,656
Possibly Canadian-cased Jonell?
More likely US cased.

While some Omegas may have been cased in Canada, I don’t think there is a way to tell the difference, since licensed cases would have been made in the US.
gatorcpa
 
Posts
120
Likes
173
Thanks everyone. This is the little bit extra that I love about OF!