Larry: In continued discussions with others and as a result of further research, it would seem that the Kay guitar knobs are not the ones on the V81. I have, however, what I believe to be another strong candidate and that is the knobs on some 1960s Zenith radios. These have the dark edges and the raised gold inner portion that gives them the three dimensional effect seen in photos of Lennon's V81. They also match the gold guard on the 1958 Model 325 Capri.
Also, to back track, these knobs would be found in the electronics shop as mentioned by Chris Huston, who was there with Lennon in those days. In any event here is the photo. I will provide a much more detailed look after I compress a larger photo. These may still not be the correct knobs but they are appear closer. For your perusal.
