Make: King
| Model: Silver Sonic
| Pitch: Eb Alto
| Finish: Gold Plate
Serial #: 30930x
| Date: 1950
Source: www.ebay.com
Make: King
| Model: Silver Sonic
| Pitch: Eb Alto
| Finish: Gold
Serial #: 319xxx
| Date: 1951
Source: www.ebay.com
Make: King
| Model: Silver Sonic
| Pitch: Eb Alto
| Finish: Gold Plate
Serial #: 346786
| Date: 1959
Source: www.ebay.com
Make: King
| Model: Silver Sonic
| Pitch: Eb alto
| Finish: Gold
Serial #: 439xxx
| Date: 1968
Source: www.saxquest.com
Make: King
| Model: Silver Sonic
| Pitch: Eb Alto
| Finish: Gold Plate
Serial #: 484xxx
| Date: 1972
Source: www.vintagesax.com
Make: King
| Model: Silver Sonic
| Pitch: Eb Alto
| Finish: Gold
Serial #: 68188x
| Date: 1990
Source: www.ebay.com