Black wax cylinder wear

[Timo Gramophone]

Not true for an Edison Diamond Disc reproducer which, like a cylinder reproducer, is also mechanically driven across the record.

Yes, Edison disc machines are different. But i meant the standard 78 rpm record player, such as Victors or Columbias.

Technically, these are not Columbia cylinders at all.
They are merely Indestructible Record Co of Albany cylinders, in a box with "Columbia" printed on them

Yes, those celluoid cylinders, that are safe to play on Edison machines, were manufactured by the Indestructible record Co. and were distributed by Columbia from 1908 to 1912.

- Timo