The Wurlitzer Mandolin Quartet, Pianino, 88-note Automatic Player
Piano, Monster band organ and certain other instruments made for
Wurlitzer by deKleist used a tracker bar hole spacing of 10 per inch.
The Mandolin PianOrchestra, Concert PianOrchestra and Paganini were
made by Philipps and have a spacing of 4 per centimeter, not 10 per
inch.
Art Reblitz
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