Haha, good luck. It's interesting that Focus even had any US made keyboards, considering that they're speculated to have made the Omnikeys, and I think all of those were made in Taiwan afaik. I know Northgate sold the design off to some other companies though.
I think that's where the Avant Prime and that weird black Omnikey come from.
Wait what? Wouldn't expect them to had made something like the Omnikey, which is built like carbon nanotudes compared Focus's usual "meh" build quality.
Have you ever seen the Focus FK-555? It bears striking similarities to the Northgate Omnikey. Some think that Focus just cloned the Omnikey, but I'm not sure. I feel like the 555 came out before the Omnikey.
Also, both the 555 and FK-747 have been spotted with Northgate Systems badges/stickers on their bezel.
Here's my FK-555:
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The Focus FK-747/727 and the 555 had really similar design cues. The back being powder coated white with those same feet that the Omnikey uses is very strange.
I do think there's a connection, especially because of the models with Northgate stickers.
But yeah, later Focuses were built pretty shoddily, I hear. I've never actually owned one. Well, unless you count the ruined PCB/Plate combo with scattered caps I got from TaoBao.
Also, the 555 is one of the heaviest metal backed boards I own.