Another 904 trans ID

townsend said

There were no PK 45----- numbers used on Magnum's or Cordoba's. Date code is from 0251.
PK 45----- numbers didn't exist until the very late 1980's.

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I have 4 999's from 74-78 Cordoba's and Magnums, and they all have the PK numbers on them. Sometimes they didn't get the stamping very deep, like can't see it at all.