| Year | 1956 |
| Date | 02-Aug |
| Volume | 115 |
| Issue | 2,880 |
| Page | 160 |
| Category | Musical |
| Part | |
| Title | A reconstructed polyphon music box |
| Author | Ernest L.Lee |
| Notes | With semi-automatic disc-changing mechanism. German and U.S.A. monopoly, coin starts action, two mechanisms, starting mechanism, safeguard, the return |