03-29-2017, 08:33 PM
It depends on which version of the 70 you have - early or late.
Early versions (below S/N B22000) use three of the small rosette knobs on the three lower shafts, and a medium rosette on the tuning shaft.
Late versions (above S/N B22000, these use 35/51 tubes and do not have a separate 27 oscillator tube) use a large rosette on the tuning shaft, two medium rosettes on the tone and volume shafts, and a small rosette on the off-on switch shaft.
This has been argued about, disagreed upon, etc. many times over the years, but Philco's own documentation bears this out. So, I go along with the Philco documentation.
"You don't have to agree with me - you have every right to be wrong if you want to be." - Rev. Lowell Mason, RIP
Early versions (below S/N B22000) use three of the small rosette knobs on the three lower shafts, and a medium rosette on the tuning shaft.
Late versions (above S/N B22000, these use 35/51 tubes and do not have a separate 27 oscillator tube) use a large rosette on the tuning shaft, two medium rosettes on the tone and volume shafts, and a small rosette on the off-on switch shaft.
This has been argued about, disagreed upon, etc. many times over the years, but Philco's own documentation bears this out. So, I go along with the Philco documentation.
"You don't have to agree with me - you have every right to be wrong if you want to be." - Rev. Lowell Mason, RIP
--
Ron Ramirez
Ferdinand IN
