50s J 14k gold help

Hi recently pick up this 50s omega 302 cal
There are two different numbers in the case that I can't find any information on when I Google
E96059 AND N6573
it's got 14k gold stamped between the lugs and J14k inside. Is it normal to have no hallmarks for gold ??
And the movement with the spacer ?would the spacer be gold or even if the movement is genuine for this model I know it's got the sub seconds hand missing .Would really appreciate it if anyone knows anything about these models thankyou

ah right ok I was 90% sure it was sold gold as it's been engraved and there's no funky colour under it lol. Just didn't realise it was from the us. Thankyou

It's a case by the Jonell Watch Case Inc., NY