Allis chalmers seed plate selector, corn?

Subject: Allis chalmers seed plate selector, corn?

Three Allis Chalmers Seed plates. For corn I'm guessing. There is one "No 1" plate and two "No 2" plates. Plate 1 is numbered from 1-18, and plate 2 is numbered from 19-36. Plate 1 has part number 321477, the others have 321478. They are in fine condition.

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