Numerical List
- 20-Note Cobs
  - 1-100
  - 101-200
  - 201-300
  - 301-400
  - 401-500
  - 501-600
  - 601-700
  - 701-760
  - 1001-1100
  - 1101-1200
  - 1201-1298
- 32-Note Cobs

Numerical List

20-Note Cobs

Played on the “Gem Roller Organ”, “Concert Roller Organ”, “Chautauqua Roller Organ”, “Home Music Box”, etc.
20-Note Cob Diagram

1-100

101-200

201-300

301-400

401-500

501-600

601-700

701-760

1001-1100