Running back to Pye, if the timeline in wiki is correct, Pye bought Nixa in 1953, but it was only after Pye bought Polygon ( for the Petula Clark connection mostly ), - 'standard ' 78s as far as I recall, in 1955 merging with Nixa and naming the label Pye Nixa. When ATV bought 50% of the company in 1959 (when - late ) the label got renamed Pye - though so far we have only two clear issues, both 1960, as Pye on 78world. In 1966 ATV bought the other half and presumably this was when the right to use the PYE name for (?25years?) was signed.