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Crowded Single Pin Notes


The photo above shows a closeup of a run of closely spaced single pin notes (cob on the right) that is later changed to two pin notes at half the repetition rate (cob on the left). Several cobs have been found where one or more runs are changed in this manner and there are no other changes to the pinning pattern. As a practical matter the single pin runs are so closely spaced that the roller organs cannot produce a distinct break in sound between the notes, achieving at best a vibrator effect. These changes are usually found on cobs numbered in the 1000s with the closely spaced pin runs found on cobs with the earlier “two circle” name labels. The updated cobs almost always have the later name label with no circle at the edge. See Label Styles.


Todd Augsburger's Roller Organ Website