Dating old piano

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0978 = 09th week of 1978, sometime in early March).

This is the week the pickup rail was completed, which was normally 1 to 4 months prior to the day the piano was finished.

The code on the pickup rail is located on the right-hand side, beneath the part number.

The first two digits indicate the week of the year, and the last two indicate the year (e.g.

A piano roll is a continuous roll of paper with perforations (holes) punched into it. The roll moves over a reading system known as a 'tracker bar' and the playing cycle for each musical note is triggered when a perforation crosses the bar and is read.

The majority of piano rolls play on three distinct musical scales.

Piano rolls have been in continuous mass production since 1896, Largely replacing piano rolls, which are no longer mass-produced today, MIDI files represent a modern way in which musical performance data can be stored.

The first paper rolls were used commercially by Welte & Sons in their orchestrions beginning in 1883.

inches or 286 millimetres); thus 65-note rolls would be perforated at 6 holes to the inch, and 88-note rolls at 9 holes to the inch, leaving margins at both ends for future developments.

This code is the best indicator of the piano's age.

In cases where the pickup rail code is unreadable, you can also look for the finish date code on the lower right-hand side of the tonebar rail.

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