[ekimetsok]

I recently came across some apparently NOS large Philco rosette style knobs. Some were still in original unmarked packaging. What was unusual is that all of them had a 1/8” hole drilled right through the center. Surely a factory job, as each one is absolutely perfect. Any explanation for this strange phenomenon?

[Radioroslyn]

Hi Mike,
I believe it's for the early 16 models with the push/pull tuning knob. Later ones used the large hex knob with a set screw. There were a few other sets that used the two speed rubber wheel drive. https://philcoradio.com/gallery2/images/...age_01.jpg

[morzh]

Yeah I immediately thought the same. Especially if the hole is couterbored, it it is a 16 knob.