We have just purchased an unusual Polymnia disc music box, regrettably
with only one disc.  This music box takes 18 1/2" discs and instead of
punched projections on the back of the disc, this make used a process
that resulted in "dimples" protruding out of the back of the disc.  The
one disc we have is only marked with the tune and the word "Patented".

We know there are discs out there because a pile of these discs were
sold separately from this machine at a Texas auction many years ago.
Any help locating more of these discs would be very much appreciated.

Martin Roenigk
Eureka Springs, Arkansas