I have a solid Koa, white label, vintage Kamaka baritone. Gold decal but no date stamp. Kamaka says they didn't stamp baritones. Anyway it has ivory keys with large screws, which appear to be original. It was sold as a '75, but Kamaka also says the larger screws weren't used until 1978. Anyone have any more insight into how I might tell when this was made. I'm guessing late '78-'80.
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