10-07-2016, 09:03 PM
The early 5-band tombstone used the hex knobs you described. Finding a large one with the screw is tough but do-able.
The later 4-band 16s utilized the "dual drive" tuning, interesting in that I have seen sets with a combination of the earlier and later hex knobs on them, and some with the later hex only.
The later 4-band 16s utilized the "dual drive" tuning, interesting in that I have seen sets with a combination of the earlier and later hex knobs on them, and some with the later hex only.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
