Does anyone have any 11.5 cm Symphonion discs of the 16000 series?
This series are designed for the 20-note comb models, not the
30-note comb models.

The discs look identical but are not interchangeable.  The only clue
to the identity of the 20-note comb compatible discs, apart from the
numbers indicating the 1600 series, is a central elongated drive hole
with two straight edges.

If you have any available I would appreciate hearing from you.

Mark Buckland