Operators Piano Company
Style O Roll Mechanisms

Coinola O roll spoolbox.

(Photograph courtesy of Art Reblitz)

Typical spoolbox used in all Coinola O roll orchestrions. The number of on-off control switches at the top varies depending on the instrumentation. This example is from a late style Coinola X.
O roll spoolbox in Coinola X orchestrion.

(Photograph courtesy of Art Reblitz)

The spoolbox is mounted above the keyboard in nearly all Coinola orchestrions including this popular model X. The style CO is an exception, with the xylophone located just above the piano stack and everything else mounted in the upper part of the tall case.
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