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The stamped numbers are the assembly date (sometimes there are 2) and the usage codes.
Here are the usage codes......... Bill of Materials Numbers: 68-69 B body 3.54 Powr-Lok 602957-1, -2, -3, -4 4.10 Powr-Lok 602957-5, -6 69.5-70 B body 3.54 Powr-Lok 603109-1, -2 4.10 Powr-Lok 603109-3, -5 70-72 B body 3.54 Trac-Lok 603222-1, -2 4.10 Trac-Lok 603222-3 |
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