[RS_COPO_Canuck]

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