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Hi.
I do not think there were any Caithness lampwork paperweights until 1974, and I do not think Willie Manson made any for them until 1976. The only Caithness paperweights issued in 1969 were the first Planets set of four.
I am sure this is not a genuine Caithness paperweight. Regarding Murano fish, I have had some in the past that were 3D and swimming upright, but not as colourful as this one.
Alan