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The entire '59 TV line was designated as "Predicta". All the '59 swivel tops, and a few low end TVs, used the series string chassis. It was an updated version of the '58 "Seventeener II" box style portable.
For 1960, Philco went to the "cool chassis" design using a power transformer. Early versions used a 5U4, but soon converted to diodes. The layout and circuit design were much improved.
The 1960 logo, knobs and trim are different from the 1959. There were some carry over sets, but for the most part "Predicta" was downplayed after 1960. All bubble tops are Predictas, but not all Predictas are bubble tops. Don
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