[Bill Cahill]

That's the famous Brunswick Ultona head.
One way, Latteral.
Scond position turn of head. Pathe vert. cut. using special Ball saphire needle.
Third turn of head. Play your vertically recorded Edison Diamond Disc records.
Careful there. The needles are not an exact match. May dammage records.

On the stereo acoustic.
Columbia actually made one very rare machine in about 1900 .
It was a cylinder graphophone.
Had 3 reproducers, three horns, and, large cylinder had three traks.
Instruments were on two side horns, and, voices on center track.
Last I knew Alan Koeningsberg had the only known existing part, the reproducer trunion. It was purchased from the shaw of I ran some years ago by Alan.
No records, no machine.
If I remember correctly, when new, the machine cost was 1,000.00 dollars.
Records supposedly 500.00 apiece.
Obviously a rich man's toy.
Never sold manny.

But, it was actually a three track stereo.
Bill Cahill