Piano Rolls

Paper rolls, generally 11 1/4 inch wide. Well preserved ends should angle the paper toward the center where it meets in a tab that will have a hole to connect to the take up roller.

65 note scale introduced in 1896 with 6 holes to the inch on center. Rolls had pins on end.

88 note scale introduced in 1900 with 9 holes to the inch on center.

72 note scale introduced in 1902.

In 1909 United States standardized on the 88 note scale.


 * Wikipedia entry for Piano roll
 * roll sizes