I have recently taken into stock some Kalliope 13-1/4" (34 cm) discs
but on close examination I find that there are three types of discs
to play on two types of instrument.

Type 1. These have a large diameter centre pivot hole;

Type 2. These have a small diam. centre pivot hole marked Type "D" disc;

Type 3. These have a small centre pivot hole created by a metal
_insert_, which looks like a makers option, to give a small diameter
pivot hole.  You can simply remove the insert to play on a machine with
the larger hole.

If anyone is interested in details of the discs do ask me for a list.
The price is sensible to make space quickly.  I have photos of all 3
types of disc.

Thank you,
Kevin McElhone
Northampton, UK

 [ front of Type 3 Kalliope disc
 [ http://www.mmdigest.com/Attachments/18/04/12/180412_010551_type%203%20front%20insert.JPG