LST series
There are two series that appears to be the early versions of the LTA series. The LST series
Stock Number | Size | Date range |
LST-1416 | 7/16 – ½ | 1941-1942 |
LST-1614 | ½ – 7/16 | 1941-1942 |
LST-1618 | ½ – 9/16 | 1941-1942 |
LST-1816 | 9/16 – ½ | 1941-1942 |
LST-1820 | 9/16 – 5/8 | 1941-1942 |
LST-2018 | 5/8 – 9/16 | 1941-1942 |
LST-2022 | 5/8 – 11/16 | 1941-1942 |
LST-2220 | 11/16 – 5/8 | 1941-1942 |
LST-2428 | ¾ – 7/8 | 1941-1942 |
LST-2824 | 7/8 – ¾ | 1941-1942 |
The style changed around 1970 – the numbers did not change