The Plumbicon tube was a game changer for colour cameras. A compact tube, hardly bigger than a vidicon, with the performance close to an image orthicon that was many times bigger.
In the UK and Europe we started our colour services from 1967 so never used anything other than Plumbicons. In the UK we had the EMI 2001 and the Marconi Mk VII, both of which used four tubes, including a separate Plumbicon for luminance. The Mk VII sold well in the USA, though nothing like the numbers of Philips/Norelco PC60/PC80.
The Philips PC60/PC80 were not widely used in the UK. We'd love to have one in the BECG collection
www.becg.tv