So....
1. 150-350 Subjects were retired and then the 350 Only Series began; but
2. Old Mill and EPDG deviate from this axiom; and
3. So does T213-1; but
4. T213-1 is different from OM and EPDG, because the latter were issued in batches rather than all at once; and therefore
5. T213-1 is not a T206?
Did I follow this logic? Are you basically pinning your argument to the assertion that OM and EPDG were issued in batches and T213-1 was issued all at once? If so, I do not see how you get from 4 to 5 above.
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